Be sure to follow me on Twitter: twitter.com/brandenflasch For anyone interested in the shirt I’m wearing, you can purchase from Rivian Stories here: www.rivianstories.com/shop/p/rivian-stories-icon EDIT: Added total time including charging (on 350kW station from a recording I did earlier in the day): For the results spreadsheet, look here: docs.google.com/spreadsheets/d/1O4NYF0kq_PfIPyTw-pp6_tLVu-niChKKg7jRz_KWf3Y/edit?usp=sharing
Not surprised, honestly. Drag (Cd) is the major driver of range at higher speeds. There is almost an exponential increase in drag from 60 to 80 mph. By contrast, "rolling" friction increases linearly with speed.
Thanks for taking the time to do these tests. I know it's hard to find the time and maintain a normal job too. Seems like you need a longer loop to get the average mph closer to the tested mph. As for your other comment about going faster seems better, it would be interesting to do a similar test but include the charging time. Do the loop twice (to increase the distance traveled) and then charge back to 85% (to see more than the peak of the charge curve). Do it at 60 MPH and 80 MPH. Clock starts from unhooking from the charger to when you complete the charge back to 85%.
I think the average speed it pretty reasonable - it would need to be a lot longer to actually average close to the constant speed given the driving to get onto the interstate and to turn around. I agree that I should do some sort of combined charging / driving speed test, somewhat similar to the goal of Bjorn’s 1000km challenge. To an extent, it can even be calculated since I have the charge curves recorded (video coming). I may do that math and see how it all comes together.
@@brandenflasch I know in our Ioniq 5 driving 85 vs 75 gets you there significantly faster over a longer road trip as long as you can get 200+kw chargers. Over 500 miles that is 45 minutes in saved driving time and only a few extra minutes at each charging stop to make up the usage difference. It would be interesting to see where the theoretical optimal speed is on some different vehicles. I am sure the r1t probably takes a harder efficiency hit at high speed vs other vehicles but has an admirable charging curve
These results are consistent with what I have observed in my Mach-E. I generally try to stick to the flow of traffic, but know that if I really need to stretch to make to the next charger I can drop to 65 mph and really extend my reach.
Thank you for running this test. I'm a reservation holder and can't wait to get my R1T. Your test confirmed what I expected, lower speed translate to higher range. I don't know if you can do this test but I would like to know what range to expect on an extended overland trip. If you lowered the tires air pressure to 39 psi and drive on moderately challenging overland dirt roads what range can I expect? I recently did a 220+ miles overland trip on an ICE truck. I would like to repeat that trip on my Rivian but I fear that's beyond the capabilities of the R1T the large battery pack. Again, thank you for running the test you did and posting the results.
Nice comparison Branden. I remember in my 2018 Bolt EV I would keep it at 70 max to keep some amount of range especially with 54kW charging. Now with the 2020 Taycan it’s 80+ based on road conditions. Nice to know that Adaptive Cruise Control and lance centering works up to 135mph. Not found a place in the States to actually check the behavior, but I am sure it was tested on the autobahn.
Good info. I like to stick with the flow of traffic or just above to stay out of knots, I hate being the EV that’s holding people up. I’ll bet you got some good looks on the 60 mi/hr test.
TL;DW 60mph - 2.64mi/kWh or 378Wh/mi, avg speed 56mph, projected total range 327mi 70mph - 2.25mi/kWh or 444Wh/mi, avg speed 64mph, projected total range 279mi 80mph - 2.02mi/kWh or 495Wh/mi, avg speed 73mph, projected total range 250mi
This is very helpful! I am doing a 328 mile round trip this weekend on 20”. I have a single EA charger for each direction and have been worried about that reliance. This hypermiling could reduce my EA risk…
Have you checked PlugShare for the EA along your route? It’s pretty unlikely you won’t be able to charge at all, but degraded charging performance could be possible.
@@brandenflasch Thanks Branden. Yup, I checked. Just a single EA station. 168 miles each way and EA station about in the middle. I was once stranded overnight in Hays, KS because of a non-working EA station. So, I kinda plan for the worse with EA. Which is a totally different experience than cross country in a Tesla…
@@davidspray9939 what did you do the next day? Not having any charging option (even if slow charging) within range is absolute EV road trip nightmare scenario.... good reason for many to stay away from EV's until infrastructure is reliable
Another thought....comparing 60 to 80. The trip was 16 minutes faster but if you added in the extra time to recharge the kwhs used. There was roughly an 8kwh difference used so at a DC Fast Charger, that's a difference of around 3-4 mins of charging time. Note, if you were charging at a Level 2, that would be around 50 minute charging difference. Nice work BF!
I actually just added the charging times on the spreadsheet linked in the pinned comment - it was 2.5 minutes more charging time between 60mph and 80mph, but 16 min time saved driving. Net savings of ~14 min.
@@brandenflasch Great. I will check out the new sheet. Unrelated Side Note...perhaps another video, when I am fast charging my Ioniq 5, I tend to take 5-10 minutes with some wipes and care for smuges on the gray interior. I also have the Black and Decker handheld vacumm to use as well. So in a few minutes I give my car a nice refresh. Like you, we have the LE Rivian Blue with Ocean Coast+Ash Wood but the R1s so I'm "practicing" the care it will take to keep it fresh and clean. I wish all charging stations had trash cans. I'm finding they build these stations with no staff maintenance in mind. I get it, it costs a lot of money. Thanks for reading!
For total road trip time, we can augment your speed by including the time taken to charge in order to find an effective miles per hour. I.e., how far can we travel per hour including charging time. My charging assumptions: 90% charging efficiency, charging from 10-60% capacity, 5min fixed time to get to the charger and initiate session, and 175kW average charge speed from 10-60% which seems reasonable based on my 2k mile road trip. The 60mph, 70mph, 80mph driving speeds become 51.1mph, 56.5mph, and 61.3mph effective speed. So you take ~8min less per 100 miles driving at 80 compared to 70. For kicks, I wanted to see how slow of a charge speed does it take for the 70mph to be faster overall than 80mph and it's 33kW. That being said, safety of myself and passengers is more important than a few minutes saved. I like to drive at a speed where I'm passing about the same amount of cars as pass me.
Could you add time of the charge between the runs then add it to the total per run. That would be interesting to see if the total time from70% to 70% soc are similar.
Thanks for doing this!!! Surprised the efficiency wasn't jumping as badly from 70->80 compared to 60->70 given that folks always state an exponential curve.... this is even less than linear. Definitely not worth to save a buck or two going 15 mins slower in my eyes. But very useful to understand the benefits of 60 or 65 when you need the added range. I have been guilty of avoiding 7$ toll bridges taking the 20 mins longer route on 3 hour trips. But 15 mins per hour is a bit too much of a penalty....
I still prefer my 2022 diesel Suburban with a 28 gallon tank. Made it from Central Michigan to Ringgold Georgia on one tank doing 75 MPH with a 10 mph headwind all the way. 27.5 MPGs for a 3 ton rig is awesome. I could never expect a Suburban sized EV to make it 730 miles in just over 10 hours with a 5 minute fuel stop before hitting the road again :) EVs are awesome for short trips around town but for quick long trips forget it.
Agree, but it is not too bad. I will be making a 2,000 mile round trip starting tomorrow. Going 1,000 miles will take me about 16 hours. That also allows me to get out and stretch often, resulting in arriving in pretty good condition. While it's a long day on the road, I am still functional when I get there!
We have a road trip we take very frequently. Same roads, same start & end point. I've documented the differences between speeds and charge times and it makes no difference. There only fast charger on route is a 62.5 kw Chargepoint unit. Door to door, i have the trip down to 6 hours, to the minute. If i drive faster, i have to charge longer, which cancels out the speed. I have found that if i drive 65 (the posted speed limit), it balances out and i am more relaxed during the drive. No excessive passing or getting stuck behind slower vehicles. Stress free travel is more important to me.
I love your new watch and it does not look big at all, but there's a good reason for that. I would love to buy one but I'm currently wearing a 40mm Series 6 because the larger face was too big. There must be a matching 45mm watch band out there on Amazon that will look great with your beautiful blue exterior?
I prefer to drive faster and charge longer. Better to be able to walk around more than sit in the car more. Be interested to see how All purpose compares to Conserve mode.
I would love to see a headlight review. They are very unique. How well do they light the road? High beam vs low? Cornering? visibility in rain? oncoming glare to others? What do fog lights add? do rear fog add considerable rear visibility? I'd also like to know how it works in real fog. Typically I try to drive with no headlights when it is really foggy as most headlights make too much glare and the fogs alone are about all you can use.
Here's the thing, when I visit my mom who lives 156 miles up the highway, I can get there and back home without ever having to stop for a charge, if I travel at 60mph. Yes, each trip will take half an hour longer, but it won't require a charging stop on either trip. Sure, some day every garage will have a charger for guests, but not every road trip is 500 miles round-trip. Range still matters. That's not to speak of fueling costs. 258 miles of range vs 338 miles of range. 80 miles is a significant range gain/loss/buffer on that trip.
Then we could weigh the difference in price between the max pack range vs the extended pack range and price it out with fast-charging costs vs home charging without stopping. I think what we'll ultimately find is the default setting from Rivian is the optimized sweet spot for most folks during normal driving. It might even be worth keeping an extra set of wheels and tires just for off-road trips even if we're attached to the looks of the less efficient tire option.
On my cross country drives in my Model 3, I calculated the maximum average *possible* speed as being somewhere around 76 mph. That took into account charging to ~90%, and the increased number of charges required to cover the distance from Minneapolis Phoenix. I'd be interested to see you take the above numbers and combine them with charging curves to find out mathematically what the best average speed is in a rivian with different charging infrastructures.
Can you please tell us what phone holder you installed in the Rivian and how you like it? Does it hold the weight of the phone well? Ive had problems with magnetic holders dropping the phone when any bumps are hit.
Just the included Uniden R7 mount 🤷♂️ followed this “guide” for wiring: www.rivianforums.com/forum/threads/radar-detector-hard-wire-who-has-done-it.4253/
What is the range efficiency at those speeds when compared to the stated range? For example, I only get about 69% of the stated range going 80MPH in my Tesla Model S on flat terrain (at about 80 degrees F).
Help! Something here doesn’t make sense to me…in 70mph you used 20% and drove 66miles which means 100% would take you 66x5=330miles with 20” there’s no way it will do 330miles
Brandon, thanks for doing this! I'm also a transplant to NC and (somewhat) patiently waiting for my R1T. I'm curious with the different tire sizes, did you notice an appreciable difference in ride comfort or were they about the same?
I guess the next question is, how much do the aero wheels and street tires save at 80mph over the all-terrains at 60mph. I guess Kyle might have the basic math on that at 70mph from that recent vid. From this data, there could be compromises that provide better solutions to driving faster and charging less.
In order to compare the numbers fairly, you need the Average Speed of the test to be at exactly 60, 70, 80 mph. Your currently test results clearly show a big discrepancy, for example your 60 mph test is actually 56 mph average. Your 70 mph test is 64 mph average. So the average speed is below the target test speed by different percentage. Meaning it is the traffic pattern, other vehicles on the highway that caused you to slow down differently in the various tests.
I found the answer to my previous comment with your 70mph numbers on the Out of Spec wheel combo comparison vid. 11% drop with the All-Terrains. So if we tried this with the street wheel/tire combo at 80mph, I bet even more could be gained back, but how much better would that combo be at 60mph? The extended range could lengthen the hours of driving without a stop that is beyond practical for most, making the 70mph speed a more practical idea again for saving both time and stops, and 80mph looking like a more practical idea with street tires than with all-terrains, go figure.
I would rather be like you. Drive faster and take more fast charging stops but at lower times per stop. I do not see any reason to charge beyond 70% if there are fast chargers within the range that allows to get tot he next stop.
idk why you guys don't factor that driver assist is like turning on a computer which could drain the battery pack more than if you didn't use driver assist
@@Japplesnap In most areas you dont. Unless youre living in a run down state like Michigan or sweating your ass off in Texas. I guess a noisy engine makes it worthwhile for you goofy petrolheads. 🤣
It's really hard to take the whole "I bought an EV because it's better for the environment" argument seriously when people completely disregard their energy use in their EV. "Well it's better for the environment to drive the speed limit, but I'm in a big rush to take this... 👀...road trip for my vacation...". Driving slower means a modestly longer trip time, sure, but it also means less time at chargers, lower charging costs, and potentially shorter lines at chargers due to people charging for less time. It also means fewer emissions from energy generation, and lower battery degradation. If charging times increase because people want to drive faster, then it's possible lines will develop, offsetting the benefit of driving faster. Especially given the current state of EA charging station outages. Seriously people... just plant to take a little longer on your trip. It's not the end of the world if it takes you an extra 30 minutes on a 5 hour drive. If you cared about time so much more than the environment, then why didn't you just buy a gas pickup truck? I mean, this is something we can even consider for daily commuting. I personally used to drive on the highway to and from work. Now I drive home on city streets and typically manage to use half the energy of the highway side of the trip. (After charging losses) And that's driving on the highway at the speed limit. It takes an extra 10 minutes per day. It's not a big deal because I plan for it. If every EV driver did that, it would reduce your daily transportation energy use by another 25%.
Who ever said I bought an EV because it's better for the environment? I bought an EV because they're better to drive and have a lower total cost of ownership.
@@brandenflasch Never said you did, I said "people". But you just confirmed my point about EV buyers. It was never about the environment, and many EV owners aren't shy about letting us all know it. Although, driving an EV pickup truck kinda alludes to that anyways. I never understood why they were eligible for a tax credit. It's hard to take the 'cost of ownership' argument thing seriously when you just shelled out $70k-$80k for a pickup truck, that gets about 2 miles per kWh. lol.
Be sure to follow me on Twitter: twitter.com/brandenflasch
For anyone interested in the shirt I’m wearing, you can purchase from Rivian Stories here: www.rivianstories.com/shop/p/rivian-stories-icon
EDIT: Added total time including charging (on 350kW station from a recording I did earlier in the day): For the results spreadsheet, look here: docs.google.com/spreadsheets/d/1O4NYF0kq_PfIPyTw-pp6_tLVu-niChKKg7jRz_KWf3Y/edit?usp=sharing
Not surprised, honestly. Drag (Cd) is the major driver of range at higher speeds. There is almost an exponential increase in drag from 60 to 80 mph. By contrast, "rolling" friction increases linearly with speed.
That's a lot of work and patience. Thanks for the video
So glad you did this test. Very informative and useful. Thanks
Thanks for taking the time to do these tests. I know it's hard to find the time and maintain a normal job too.
Seems like you need a longer loop to get the average mph closer to the tested mph.
As for your other comment about going faster seems better, it would be interesting to do a similar test but include the charging time. Do the loop twice (to increase the distance traveled) and then charge back to 85% (to see more than the peak of the charge curve). Do it at 60 MPH and 80 MPH. Clock starts from unhooking from the charger to when you complete the charge back to 85%.
I think the average speed it pretty reasonable - it would need to be a lot longer to actually average close to the constant speed given the driving to get onto the interstate and to turn around.
I agree that I should do some sort of combined charging / driving speed test, somewhat similar to the goal of Bjorn’s 1000km challenge. To an extent, it can even be calculated since I have the charge curves recorded (video coming). I may do that math and see how it all comes together.
@@brandenflasch I know in our Ioniq 5 driving 85 vs 75 gets you there significantly faster over a longer road trip as long as you can get 200+kw chargers. Over 500 miles that is 45 minutes in saved driving time and only a few extra minutes at each charging stop to make up the usage difference. It would be interesting to see where the theoretical optimal speed is on some different vehicles. I am sure the r1t probably takes a harder efficiency hit at high speed vs other vehicles but has an admirable charging curve
These results are consistent with what I have observed in my Mach-E. I generally try to stick to the flow of traffic, but know that if I really need to stretch to make to the next charger I can drop to 65 mph and really extend my reach.
It's pretty crazy how much of a difference it can make.
Thanks buddy. I know this stuff is not easy. It's appreciated, Sir!
In the Mach-E from 100%-0%
70mph = 188mi at 2.7mi/kWh.
55mph = 282mi at 4.1mi/kWh.
(SR RWD)
Huge difference!
Not very good op. Glad I didnt buy it 😂
Thank you for running this test. I'm a reservation holder and can't wait to get my R1T. Your test confirmed what I expected, lower speed translate to higher range. I don't know if you can do this test but I would like to know what range to expect on an extended overland trip. If you lowered the tires air pressure to 39 psi and drive on moderately challenging overland dirt roads what range can I expect? I recently did a 220+ miles overland trip on an ICE truck. I would like to repeat that trip on my Rivian but I fear that's beyond the capabilities of the R1T the large battery pack. Again, thank you for running the test you did and posting the results.
That would certainly be an interesting test, but the conditions are so extremely variable I’m not sure there would be much value.
Bless you for doing this. Now do a 110mph one for us europeans.
I wish!
Nice comparison Branden.
I remember in my 2018 Bolt EV I would keep it at 70 max to keep some amount of range especially with 54kW charging. Now with the 2020 Taycan it’s 80+ based on road conditions. Nice to know that Adaptive Cruise Control and lance centering works up to 135mph. Not found a place in the States to actually check the behavior, but I am sure it was tested on the autobahn.
That makes total sense! With Taycan you can really rip.
Good info. I like to stick with the flow of traffic or just above to stay out of knots, I hate being the EV that’s holding people up. I’ll bet you got some good looks on the 60 mi/hr test.
A lot of people slowing down to take pics and videos 😂
TL;DW
60mph - 2.64mi/kWh or 378Wh/mi, avg speed 56mph, projected total range 327mi
70mph - 2.25mi/kWh or 444Wh/mi, avg speed 64mph, projected total range 279mi
80mph - 2.02mi/kWh or 495Wh/mi, avg speed 73mph, projected total range 250mi
This is even linked in the pinned comment.
This is very helpful! I am doing a 328 mile round trip this weekend on 20”. I have a single EA charger for each direction and have been worried about that reliance. This hypermiling could reduce my EA risk…
Have you checked PlugShare for the EA along your route? It’s pretty unlikely you won’t be able to charge at all, but degraded charging performance could be possible.
@@brandenflasch Thanks Branden. Yup, I checked. Just a single EA station. 168 miles each way and EA station about in the middle. I was once stranded overnight in Hays, KS because of a non-working EA station. So, I kinda plan for the worse with EA. Which is a totally different experience than cross country in a Tesla…
@@davidspray9939 what did you do the next day? Not having any charging option (even if slow charging) within range is absolute EV road trip nightmare scenario.... good reason for many to stay away from EV's until infrastructure is reliable
Another thought....comparing 60 to 80. The trip was 16 minutes faster but if you added in the extra time to recharge the kwhs used. There was roughly an 8kwh difference used so at a DC Fast Charger, that's a difference of around 3-4 mins of charging time. Note, if you were charging at a Level 2, that would be around 50 minute charging difference. Nice work BF!
I actually just added the charging times on the spreadsheet linked in the pinned comment - it was 2.5 minutes more charging time between 60mph and 80mph, but 16 min time saved driving. Net savings of ~14 min.
@@brandenflasch Great. I will check out the new sheet. Unrelated Side Note...perhaps another video, when I am fast charging my Ioniq 5, I tend to take 5-10 minutes with some wipes and care for smuges on the gray interior. I also have the Black and Decker handheld vacumm to use as well. So in a few minutes I give my car a nice refresh. Like you, we have the LE Rivian Blue with Ocean Coast+Ash Wood but the R1s so I'm "practicing" the care it will take to keep it fresh and clean. I wish all charging stations had trash cans. I'm finding they build these stations with no staff maintenance in mind. I get it, it costs a lot of money. Thanks for reading!
For total road trip time, we can augment your speed by including the time taken to charge in order to find an effective miles per hour. I.e., how far can we travel per hour including charging time.
My charging assumptions: 90% charging efficiency, charging from 10-60% capacity, 5min fixed time to get to the charger and initiate session, and 175kW average charge speed from 10-60% which seems reasonable based on my 2k mile road trip.
The 60mph, 70mph, 80mph driving speeds become 51.1mph, 56.5mph, and 61.3mph effective speed. So you take ~8min less per 100 miles driving at 80 compared to 70.
For kicks, I wanted to see how slow of a charge speed does it take for the 70mph to be faster overall than 80mph and it's 33kW.
That being said, safety of myself and passengers is more important than a few minutes saved. I like to drive at a speed where I'm passing about the same amount of cars as pass me.
Could you add time of the charge between the runs then add it to the total per run. That would be interesting to see if the total time from70% to 70% soc are similar.
Added to the spreadsheet linked in the pinned comment
Added the times to the spreadsheet
Thanks for doing this!!! Surprised the efficiency wasn't jumping as badly from 70->80 compared to 60->70 given that folks always state an exponential curve.... this is even less than linear. Definitely not worth to save a buck or two going 15 mins slower in my eyes. But very useful to understand the benefits of 60 or 65 when you need the added range. I have been guilty of avoiding 7$ toll bridges taking the 20 mins longer route on 3 hour trips. But 15 mins per hour is a bit too much of a penalty....
I still prefer my 2022 diesel Suburban with a 28 gallon tank. Made it from Central Michigan to Ringgold Georgia on one tank doing 75 MPH with a 10 mph headwind all the way. 27.5 MPGs for a 3 ton rig is awesome. I could never expect a Suburban sized EV to make it 730 miles in just over 10 hours with a 5 minute fuel stop before hitting the road again :) EVs are awesome for short trips around town but for quick long trips forget it.
Driving that long with so few stops sounds terrible. I’ll stick with my EV.
Agree, but it is not too bad. I will be making a 2,000 mile round trip starting tomorrow. Going 1,000 miles will take me about 16 hours. That also allows me to get out and stretch often, resulting in arriving in pretty good condition. While it's a long day on the road, I am still functional when I get there!
@@brandenflasch Well we still hit every other rest stop for potty breaks :) LOL
@@stevemakowski9776 so why not charge at the same time?
Love your shirt! Thanks for the tests and results.
This would be an awesome trailer towing test.
This is pretty much in line with what I’ve seen on my R1T. However, if you draft behind a semi or an RV, your efficency skyrockets.
Until you need to replace your windshield 😂
We have a road trip we take very frequently. Same roads, same start & end point. I've documented the differences between speeds and charge times and it makes no difference. There only fast charger on route is a 62.5 kw Chargepoint unit.
Door to door, i have the trip down to 6 hours, to the minute. If i drive faster, i have to charge longer, which cancels out the speed. I have found that if i drive 65 (the posted speed limit), it balances out and i am more relaxed during the drive. No excessive passing or getting stuck behind slower vehicles. Stress free travel is more important to me.
That’s fair. With faster DCFC or overnight charging, it’s worthwhile to drive faster and you’ll come out ahead on overall trip time.
The large 20” AT tires and wheels look amazing but they do impact range quite a bit.
Trucks are thirsty no matter what 😂
Thanks!
I love your new watch and it does not look big at all, but there's a good reason for that. I would love to buy one but I'm currently wearing a 40mm Series 6 because the larger face was too big.
There must be a matching 45mm watch band out there on Amazon that will look great with your beautiful blue exterior?
I prefer to drive faster and charge longer. Better to be able to walk around more than sit in the car more. Be interested to see how All purpose compares to Conserve mode.
My motto has always been that I can charge a lot faster than I can drive.. so drive fast!
I would love to see a headlight review. They are very unique. How well do they light the road? High beam vs low? Cornering? visibility in rain? oncoming glare to others? What do fog lights add? do rear fog add considerable rear visibility? I'd also like to know how it works in real fog. Typically I try to drive with no headlights when it is really foggy as most headlights make too much glare and the fogs alone are about all you can use.
Here's the thing, when I visit my mom who lives 156 miles up the highway, I can get there and back home without ever having to stop for a charge, if I travel at 60mph. Yes, each trip will take half an hour longer, but it won't require a charging stop on either trip. Sure, some day every garage will have a charger for guests, but not every road trip is 500 miles round-trip. Range still matters. That's not to speak of fueling costs. 258 miles of range vs 338 miles of range. 80 miles is a significant range gain/loss/buffer on that trip.
The blinker noise sounds like water dripping.
It’s supposed to be raindrops, to keep with their outdoor/nature theme. When you lock the car it make s bird chirp noise.
Then we could weigh the difference in price between the max pack range vs the extended pack range and price it out with fast-charging costs vs home charging without stopping. I think what we'll ultimately find is the default setting from Rivian is the optimized sweet spot for most folks during normal driving. It might even be worth keeping an extra set of wheels and tires just for off-road trips even if we're attached to the looks of the less efficient tire option.
Will you be doing a 0-60 video with all the sets of wheels/tires like you did for the range test?
Unfortunately I only have the 20" AT
I've started to run mine on Low for Conserve. I noticed only ~0.05 mi/kwh between liw and lowest. I'd love to see what you get
I wish you could run the test with 20 road tires if those make any difference on the range.
Open to tire sponsors, otherwise it would be silly to swap perfectly good tires.
Understandable, but whenever you do I would suggest try 275-60-20 since they'll be pretty close in height to stock 21" wheels.
@@punjabian1997 275/65R20 should actually be a bit more efficient on interstate
On my cross country drives in my Model 3, I calculated the maximum average *possible* speed as being somewhere around 76 mph. That took into account charging to ~90%, and the increased number of charges required to cover the distance from Minneapolis Phoenix.
I'd be interested to see you take the above numbers and combine them with charging curves to find out mathematically what the best average speed is in a rivian with different charging infrastructures.
What math did you use to calculate the ideal average speed? Data crunching isn’t really my speciality
Can you please tell us what phone holder you installed in the Rivian and how you like it? Does it hold the weight of the phone well? Ive had problems with magnetic holders dropping the phone when any bumps are hit.
Works great - if you click on my channel, I actually have a dedicated video walking through the whole setup.
Great analysis. I get that 60mph is more efficient than 80mph, but what is the speed that will give the most range? I'm guessing 40(?).
Someone doesn't understand how evs work 😂 More like 20 mph
very informative test. I'm on the verge of delivery and would love to know about the radar detector mount and wire, what is the mount?
Just the included Uniden R7 mount 🤷♂️ followed this “guide” for wiring: www.rivianforums.com/forum/threads/radar-detector-hard-wire-who-has-done-it.4253/
You could have used the efficiency graph on the drivers console to see real time efficiency.
Showing for the last 15min is a silly way to show efficiency
What is the range efficiency at those speeds when compared to the stated range? For example, I only get about 69% of the stated range going 80MPH in my Tesla Model S on flat terrain (at about 80 degrees F).
Help! Something here doesn’t make sense to me…in 70mph you used 20% and drove 66miles which means 100% would take you 66x5=330miles with 20” there’s no way it will do 330miles
Watch to the end… this is why mi/kWh is used
any way to try it at 50, or would that be too dangerous for that route?
I don’t think 50mph would be doable safely - even 60mph was borderline. Probably wouldn’t do it again unless it was a day with less traffic.
You can do it at 50mph on a frontage road
Brandon, thanks for doing this! I'm also a transplant to NC and (somewhat) patiently waiting for my R1T.
I'm curious with the different tire sizes, did you notice an appreciable difference in ride comfort or were they about the same?
I didn’t drive the truck with 21s, but between 20s and 22s, it was essentially the same.
I guess the next question is, how much do the aero wheels and street tires save at 80mph over the all-terrains at 60mph. I guess Kyle might have the basic math on that at 70mph from that recent vid. From this data, there could be compromises that provide better solutions to driving faster and charging less.
In order to compare the numbers fairly, you need the Average Speed of the test to be at exactly 60, 70, 80 mph. Your currently test results clearly show a big discrepancy, for example your 60 mph test is actually 56 mph average. Your 70 mph test is 64 mph average. So the average speed is below the target test speed by different percentage. Meaning it is the traffic pattern, other vehicles on the highway that caused you to slow down differently in the various tests.
No, it’s due to having to drive to the interstate, turn around and back to the charger. This is a real world test, not a lab test.
I found the answer to my previous comment with your 70mph numbers on the Out of Spec wheel combo comparison vid. 11% drop with the All-Terrains. So if we tried this with the street wheel/tire combo at 80mph, I bet even more could be gained back, but how much better would that combo be at 60mph? The extended range could lengthen the hours of driving without a stop that is beyond practical for most, making the 70mph speed a more practical idea again for saving both time and stops, and 80mph looking like a more practical idea with street tires than with all-terrains, go figure.
Increase in speeds is mostly an increase in aero drag
Yeah, if we could regain some of that efficiency without having to slow down, that would be the most practical answer, I think.
Does the EPA say what speed its highway portion of its range estimate is run at?
Probably 65
can you do the same test with conserve mode and standard mode?
See the video I did comparing the modes
Heartbeat turn signals?
Did you hardwire the Uniden?
Yes I did
Why do you turn off the climate before unplugging? Is that something you’re supposed to do in an EV?
Just to not use energy in between unplugging and driving to make the test as accurate as possible. No reason to do this in normal driving.
Is that a Valentine detector on your windshield?
Uniden R7
Thanks for the reply on the Uniden R7.
I drive my R1S fast... everywhere I go. Fast.
As do I
You were surprised going 30% faster (little under 80 vs 60) would use 30% more power? Okay.
but covering the same distance.
do 50 mpg and 40 mph please
Not safely doable and really not a useful test IMO - no one is going that low of speed for the whole range of a vehicle
@@brandenflasch you can’t find a long stretch of road? Of course don’t do this on the highway lol.
@@RomanChaar I simply don’t have the patience to do a run at that low of speed
I would rather be like you. Drive faster and take more fast charging stops but at lower times per stop. I do not see any reason to charge beyond 70% if there are fast chargers within the range that allows to get tot he next stop.
Totally agree
Awesome
Towing tests?
I'm game to do some if someone has a trailer I can borrow, otherwise I'll leave that testing to Kyle.
Do it at like 2am
Did you account for wind speed?
It was a loop so the wind should mostly be offset.
Do a city run with maxed tire air pressure, to see the max efficiency
idk why you guys don't factor that driver assist is like turning on a computer which could drain the battery pack more than if you didn't use driver assist
The impact is extremely negligible compared to moving a vehicle at speed. We’re talking about 1/4 mile of energy use or less.
@@brandenflasch Is it more or less than all the seats on full heat?
@@uhjyuff2095 less.
More than likely it's running in the background whether it's active or not
@@Crazypostman I hope not, computers when using the cpu harder use more electricity
Definitely the shortest overall time for a trip....
Shortest time from point A to point B? That's what ICE vehicles do best.
And you pay quite a lot more because you can't plan your life better 😂
@@samusaran7317 No, I save a lot more by not buying an EV.
@@Japplesnap In most areas you dont. Unless youre living in a run down state like Michigan or sweating your ass off in Texas. I guess a noisy engine makes it worthwhile for you goofy petrolheads. 🤣
It's really hard to take the whole "I bought an EV because it's better for the environment" argument seriously when people completely disregard their energy use in their EV. "Well it's better for the environment to drive the speed limit, but I'm in a big rush to take this... 👀...road trip for my vacation...". Driving slower means a modestly longer trip time, sure, but it also means less time at chargers, lower charging costs, and potentially shorter lines at chargers due to people charging for less time. It also means fewer emissions from energy generation, and lower battery degradation. If charging times increase because people want to drive faster, then it's possible lines will develop, offsetting the benefit of driving faster. Especially given the current state of EA charging station outages.
Seriously people... just plant to take a little longer on your trip. It's not the end of the world if it takes you an extra 30 minutes on a 5 hour drive. If you cared about time so much more than the environment, then why didn't you just buy a gas pickup truck?
I mean, this is something we can even consider for daily commuting. I personally used to drive on the highway to and from work. Now I drive home on city streets and typically manage to use half the energy of the highway side of the trip. (After charging losses) And that's driving on the highway at the speed limit. It takes an extra 10 minutes per day. It's not a big deal because I plan for it. If every EV driver did that, it would reduce your daily transportation energy use by another 25%.
Who ever said I bought an EV because it's better for the environment? I bought an EV because they're better to drive and have a lower total cost of ownership.
@@brandenflasch Never said you did, I said "people". But you just confirmed my point about EV buyers. It was never about the environment, and many EV owners aren't shy about letting us all know it. Although, driving an EV pickup truck kinda alludes to that anyways. I never understood why they were eligible for a tax credit.
It's hard to take the 'cost of ownership' argument thing seriously when you just shelled out $70k-$80k for a pickup truck, that gets about 2 miles per kWh. lol.
I will drive slower if there is chance to cut down a charging stop or two.
I’ll only do that if I can avoid going out of my way - if the charger is convenient I’ll drive fast and add a stop