Pressure Test: Driving on Sand Dunes
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- Опубликовано: 16 апр 2019
- What tyre pressure should you run in your tyres on sand? Believe it or not, it makes a significant difference. How much difference? We tested three different pressures on sand dunes to find out!
Together with Performance Driving Australia we talk about driving on sand dunes, tyre pressure for sand dunes and how to adjust your tyre pressure for sand dunes.
Full Transcript:
Gudday, I'm Jared from Tyre Review Australia. And today we're actually gonna be looking at what tyre pressures you should be running in the sand. And we're not be just talking about this, we're actually going to be demonstrating it.
So, we've got David from Performance Driving Australia here in our Toyota Hilux which has the Yokohama Geolandar Ultra end tyres on it. These tyres are currently inflated to 34 PSI in the back and 32 PSI in the front, which is factory specs. Some people do run higher pressures in these but this is what the factory says so we'll start off with that.
And we're actually gonna see if we can run the car up that hill. So, David, what sort of settings are you gonna run today?
I think we'll just keep this fairly simple, so we'll keep the car in four low, we'll have it in power mode so it allows the extra torque of the motor to work the car a little bit more easily. But other than that we won't switch anything else and we'll just let the car do it's work.
Easy. Switch her on and see how you go. All right. Go.
Roger.
Oh, he's not making it. He's digging a hole. Oh dear, so he's got about half way up.
So David, you only made it about half way up that time. You want to have another go at the full factory specs?
We'll have another go and we'll just see whether or not ... I know we've pushed a bit of sand down whether it tracks a little bit better.
Yeah. All right so factory pressures, take two.
About the same spot right there. Car's still straight, feels good, just can't get enough grip on the sand unfortunately.
Get some momentum up. That's about as good as it gets. I'll keep the car straight. Let it fall back down on its own tracks. Keep good momentum up, so we don't bury in the bottom of the dune. And try not to run anyone over.
So, we've just run this car up the hill with factory pressures, so 34 in the back and 32 in the front, and it made it maybe a third of the way up. We've just lowered the pressure's down to 25 PSI. Let's see how it goes. Go.
Definitely got a bit further that time by a couple metres. Kinda felt like it hopped up a bit more quickly onto the top of the sand as well. Pretty trying conditions in here. Very soft sand and very warm.
25 PSI, take two. Go.
Definitely got a bit further that time by a couple metres.
25 PSI, take three.
About the same point again. [inaudible 00:03:26] consistent.
Okay. We're now at 16 PSI which is the minimum recommended pressures by the experts for driving on sand. And so, David here from PDA is trying to get up that hill at 16 PSI. Take one.
Almost. Almost got up the top with no run up.
Okay. So he got three metres further on take one. So this is 16 PSI, take two.
They probably do it again on [inaudible 00:04:16] now. We might try a little line off to one side so we don't dig holes quite as big. But it's certainly easier to get the car moving backwards and forwards at the moment.
Okay. 16 PSI, take three.
Come on you good thing. Come on you good thing. Come on. Come on.
So, at 16 PSI on the last attempt he actually made it to the top. And I think he's just about run over one of our Go Pros. But, this is proof that you really need to be running a low pressure in the sand dunes.
So David, you made it to the top of the hill, 16 PSI. The factory recommended pressures just didn't cut it, you got maybe half way up the hill, a third of the way up the hill. We went down at 25 PSI that got two thirds of the way up the hill. And then even on 16 PSI you only made it on your third attempt. So, it just shows how sandy, well obviously it's sandy, but how powdery the sand is and how difficult that actual hill was.
Sure. And the idea of the test is to actually put it under an extreme circumstance to see what it does. With a little bit more momentum it would have been a bit easier, but at the same time, it's a fairly steep and arduous dune to go up. Most people might choose to find another way around it, but certainly the changes in pressure just make the job a lot easier.
That's right. So lowering the pressure makes it easier on the car, makes it easier on you as the driver, and just makes it easier in general because people don't have to come and pull you out when you get stuck.
Great. Thanks David.
No worries.
Cheers. 
Авто/Мото
Thanks for the video! Nicely done.
Thanks Cody 🤘
My mate took an old Pajero on Bribie island straight off the road after drinking a few beers he keep his foot into it and we didn't get bogged. Momentum works
Cool vid buddy
As a Sandgroper we evolved in sand and have a bowl for breakfast. For beach driving I use 11 psi to 14 psi on my Nissan Navara D40 single cab tray back depending on the conditions on the day. All terrain tyres don't have a problem at those pressures considering you're not going fast. You won't risk rolling a bead unless you're well less than 10psi but obviously avoid hard sudden turns if you can.
These fellows from Seek Adventure did a test of different pressures (BT50) by deliberately doing tight figure of 8's in the sand at Lancelin ... and they were using HT tyres with softer sidewalls. They started at 15 psi and didn't roll a bead until 6 psi.
ruclips.net/video/5oKMD8iuAJY/видео.html
Sounds spot on Scott! I'll have to check out that video, I hadn't seen that one before. Something similar to something I've been planning for a while, but we'll use ATs. It'd be curious to see whether stiffer tyres roll off the bead more easily, too 🤔
Great video
Thanks mate!
good production, vechicle and gear. give us something we haven't seen 1000 times before and your channel could go places
Thanks mate, working on it 👍
Would be cool if you tested even less tire pressure, like 12 psi or 10 psi
Yeah, I'm keen to go back and just see how long it'd take to actually tear the tyres off as we keep decreasing pressure.
Winder Towing run 9 psi on Utah sand
hahah thats why im hear cuz of ed and the other guy from winder towing cheers
Matt runs beadlock, not recommended to go to single digits in non bead lock tires.
@@budmidgett9728 Matt ran without beadlock for a loooong time though with little issue. IIRC he swapped because he kept losing beads in the rocky stuff, not the sandy stuff.
Hey guys, I may be late to the party here, but did they mention this pressure test on their channel somewhere? I've watched a good number of their videos 👍
A lot of people end up testing street vs mud or at tires and they always say how street moves easier on the sand becuse it isn't trying to dig ( the lugs are meant to bite vs float) .. Maybe a cool test for u guys
Hi mate, With this one, many folks think that muddies are best for everything, so we wanted to demonstrate that they're not actually the optimum choice for sand, vs the other common choice of All Terrain. Off roaders are likely to be running either AT or MT, so best to run those as the examples. Still, I'll add that to our list of video options going forward 👍
@@TyreReviewVideos🍺
@@TyreReviewVideos Yes, I searched a bit of times a video comparing a/t, mud and street tires on off road circunstances, and couln't find a great teste like those like you do... Hope you can make this video
what kind of coating did you use for your Hilux?? don't see any sand left on your car?? just got my 2021 Hilux Mako would like know if i need to spray or add something before going on the beach (New Zealand)
Hi mate, no coating on these cars - they were lenders, so just had the factory finish. Just need to give them a good clean prior and after the trip, so there's nothing to stick to.
Did you lock diff or not?
Is there a portable compressor you recommend? I need it to fill my tires after deflating for riding in the dunes... 20lbs x 4.
There's a bunch out there, and everyone has kinda different needs in terms of storage and the amount of time that you actually need it. Two things to keep an eye on is that the compressor has enough go to actually fill a larger tyre in a quick enough time, and the Duty Cycle, which is the amount of time a compressor can spend on, until it overheats and needs a break. It's best to choose a compressor that can do the volume you need without a break, as otherwise it takes significantly longer. I use a portable ARB compressor currently, which does a good job, but it's not quite as fast as their bigger one, which I'm thinking about building into the next vehicle. ~Jared
arb twin piston. period
Power mode...to use the extra torque of the motor 😂
That power button doesn’t do what you think it does...
What's does It do then??
@@knowthis87 usually the power button just allows the auto transmission to rev higher before shifting up gear.
@@knowthis87 In the Hilux all it does is change the throttle response (At least thats what the dealer told me)
I'm no expert I'm just using my common sense but wouldn't going too low like below 10 psi you are putting yourself at risk? Like risk of tires de-beading and coming off the rims?
Correct, that's why we didn't go too low with this test, but we'll do another soon that looks at the risks of debeading at low pressures in sand 👍
Why didn't you go lower pressure?
Hi mate, at the time we were just going down to the recommended pressure, but we're actually planning on redoing this at some stage and we'll go down to zero psi to do the full demo. Cheers! Jared
So you left traction control on?
Traction control was off for all these tests 👍
For larger than stock tires with normal inflation of 70 pounds, how low would you go?
That's a huge amount of PSI, what are the specs on the vehicle and tyres?
@@TyreReviewVideos silverado 2500 with 285 70 17 tires
Interesting, we don't get the 2500's down here from factory, so I had to do a little looking up. I guess the key thing is that by deflating your tyres you're increasing the contact patch of your tyres. They probably list high tyre pressures to enable you to carry the heavy loads in the back (or tow), like the 2500 is intended for, but when you're on the sand you're probably not really loaded up. What I'd look for is how much wider the tyres are getting. From my online looksie, it seems that starting off with 20psi, which is the same we do with our smaller vehicles over here, is a good start, then decrease from there. I probably wouldn't go below 16psi for faster driving, but saw some references to folks driving vehicles like yours with 12 psi on soft sand. There's no real hard/fast rule to it, though, it depends on the terrain, the vehicle, the load and the driving. Cheers!
@@TyreReviewVideos Thanks!
No wuz!
What are y’all’s vehicles so under powdered r over there?
Haha, pretty much! Fuel is a bunch more expensive down here, so most new vehicles come with small 4cyl engines, particularly the utes (think Ranger and Tacoma type size). Regulations and restrictions means that folks are far less likely to change motors as well, as to have it legal on the road, it has to be engineered and also the engine has to be newer than the vehicle. It's all a bit lame, but we do what we can 👌
Yeah imagine a Ram 1500 eco diesel or a ram 2500 Cummins would've taken that with ease
I'd be interested to see that. They've got more power, but they also weigh significantly more. That'd be a fun comparison 👍
@@TyreReviewVideos yeah They weigh alot I love ur content guys best tests with details ever Keep it up appreciate it ✨
Thanks mate!
In the begining he said, he will drive in 4L, I think he shud be driving in 4H
Interestingly, driving in 4L on soft sand, which this surely was, puts a bunch less strain on the torque converter, which means less heat, which is better for the car. I also don't think it would have gotten up enough speed, nor had enough gears, in high range, as this was a really tight little spot.
6psi and it would be a walk in the park
at 6psi your tires probably risk of de-beading and coming off the rim.
Flog it in much faster on the last attempt, use the momentum but cut the scenes so you actually have a video and proof of concept to show lol.
yea. because you can, try flog it at 36 psi. good luck. youll be digging to china.
you can get more momentum on 4 hi
Depends on the situation, really. We gave Dave a really short run up, to exacerbate the test 👍
4 HI, 2nd gear, 20 psi never failed me
Tyre?
Four of them! Yokohama G015 all terrains.
Funny you guys use psi
put the fucking gear in the nomper 1 not D
honestly, driving WAAAAY too slow on the first tries, then you go all out on the last try to prove a point lol. We all know lower pressures do better on the sand, but the driving is off.
No saben manejar la verdad que me la presten ami para que vea
You lost me at 4low
That really depends on the sand and the driver. We're catering for the masses here, where they're better off starting in low then making their own choices. High range is good in some situations where the sand is harder, but low will help most people with modern, underpowered utes and wagons, to keep their revs up 👍
Trying to run on mud and sand with 4 high would be suicide for underpowered vehicles.
4 low is better for the truck because it keeps the stress j the axles and not the transmission