Off-Road 4WD Tyre Pressures - Sand, Mud, Rock and Snow
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- Опубликовано: 23 апр 2019
- This video will cover various off-road 4x4 tire (tyre) pressures to suit different terrains (gravel, rock, mud, snow and sand). It will look into the impacts, benefits and consequences of different tyre pressures and give you some general rules and guides on what tyre pressures to use when off road.
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Great video! It is very important to reduce the speed when the pressure is reduced. At 5 psi, if there are no beadlock wheels, the tire can peel off the rim.
Best content ever mate!
Highway 30-40 psi
Gravel/dirt roads 25 - 30 psi
Rocky and mud terrain 20 -25 psi
Muddy and Sandy terrain 15 - 20 psi
Soft sand and mud terrain 10 - 15 psi
Emergency situations only 5 - 10 psi
Speed warning
Rule of thumb:
% reduction in pressure = % reduction in speed
Where does Snow fall on this list?
What about snow mate
He don’t know about snow
@@avpr1c same as sand
Depends on the type of snow, temperatue, vehicle weight, and depth of snow. It's its own equation...
Nice visuals, thank you for the video
EXCELLENT Video!
Thank you for making this video!!!
Cheers, thank you!
Thank you Very concise and to the point !
Glad it was helpful!
Such a helpful video!
Glad it was helpful!
I always keep 40 PSI on my M/T tires as on the highway driving when go off-roading since I has had a electric pump in car. I've done inflation by manual pedal air pump at home and it takes too much effort around more than 50 strokes to bring pressure back to 40 PSI. I'll looking for the electric one for the next trip.
Thanks for you video. Could you please explain a bit more in depth how airing down might improve fuel economy? Thanks!
Suggestion - when you start and then drop the pressures, how about showing the Tyres footprint in actual mm. Cheers
Cool vid thanx
great vid, funny how the auto cc registers the compressor noise as [music] lol
Are these numbers measured when the tires are warmed up (hot) or are you stating cold air pressures? Thanks!
Great vid, is that Wombat quarry?
Ty!
tnx mate 👍
No problem 👍
One tip the wider the tire creates more grip so higher chance or stripping tire from rim at low pressure . In my 12.5 wide unbeaded I can only go 9psi safely in my 9inch duratraks I can go 6 psi unbeaded
It doesn't get wider, it gets longer.
@@DavidVoxDem That's not what he's talking about.
We use high psi 35-40 in deep mud to avoid mud going in to the tyres . Only when doing extreme offroding. It will result in bad offroding performance but you can't change tyres in deep mud .
as well as pressure, the type of tire matters as well. A tire for a 3/4 ton truck might be a load range E, which will not grow much even at very low pressures. I use really soft tires on my Jeep because it's only used for the beach.
Great point!
Great job with the video, Loved it.
Just saying it seems you need to be putting a whole lot of power down to spin a wheel inside the tyre, I have run 12 sec quarters on 28 inch slicks at 10 psi and could not get them to spin inside the wheel. But it seems easy to break the tyre away from bead when twisting and turning with low pressures.
Cheers, thank you. I agree, breaking the bead is much more likely then spinning the wheel inside the tyre.
Great video! I’m new to off-road and stuff. I have a Jeep with wheels 225/65 R17, I usually use them with 35 PSI in town and highway road. How long should I go when going off road? 25% less PSI? Thank you if you reply!
Cheers, thank you. It really depends on the terrain... My suggestion would be to air down a little bit (e.g. 25 PSI), gauge it to your terrain and if you think you need to lower it again, then do so in 2-3 PSI increments. Each small increment should improve traction considerably.
What air compressor and deflator did you use? Thxs.
It's an ARB Air Compressor and Digital Tyre Gauge
Hello. In your summary, you don't mention a range for snowy conditions. What would you recommend as the best tire pressure range for snow-covered terrain? Thank you!
He does at 3:37
Thanks vert informative video .
How to transforme PSI un BAR ?
1 BAR is around 14.5 psi
1 psi is around 0.068 BAR
why not the width both help
My suv is recomended to put 35 psi .should i flat down to 30 for gravel
My suggestion would be to air down a little bit (e.g. 25 to 30 PSI), gauge it to your terrain and if you think you need to lower it again, then do so in 2-3 PSI increments. Each small increment should improve traction considerably. The lower you go, you introduce other risks like sidewall being more vulnerable to damage.
How much ground clearance do you think you lost going from full inflation to 15psi?
Great question! Answer is I'm not sure and it would vary between vehicles. I guess it is a compromise, ground clearance vs. traction... a factor to consider depending on the terrain.
What compressor are you using?
It's an ARB Air Compressor.
There was one very important subject that wasn't covered here...LT tires vs P rated. Even all terrain tires that are P rated...I'd never take them below 15 PSI because the sidewalls are too thin.
Good point, LT (Light Truck) duty is critical.
Man you can just air dowm with the arb manometer, it’s fast
Yes you can, I don't find it as quick however, but more precise...
Hola, please write in spanish too we don't, understand You , and we
Likes yours videos.
Thanks You.
Really Carlos
i just watched a real time video proving, that showed lowering tire pressures in snow does worse, in fact the only thing helped was locked diffs / elockers and chains ....
You said nothing about winter psi
snow = same as sand usually
Dude you can comfortably run 7 or 8 psi without deadlocks.
Really
@@JohnRivers-ol5tv not worth the risk
your pressure equals speed theory is double da da dumb. the belts in a tire dont stretch and your speed remains constant
At 20 psi is quite soft it will do amazing contortions. You don't want your tire doing amazing contortions at high speeds! In curves it needs to stand up firm!
If you look at the lawsuits involving Ford and Firestone, it came down to under inflated tires, coupled with a heavy load on the vehicle. Ford wanted a soft ride, so the pressure was on the low end. The customer would take it to the tire shop in preparation for a long trip, the tire shop would set the hot tire to the door jam pressure. Now the tire is actually about 5 psi under the door jam pressure, becauseit was hot. Then the customer would load it up to the max and beyond. What could go wrong!
I didn't hear you list your qualifications. Why should I believe you are qualified to present a video on this topic ?