December 27, 2005

32 on the road.

14-17 for rocks and general trails.

12-15 in the sand.

December 27, 2005

my 2 cents...
Background: I run goodyear MT/R's in 33x12.50 on 15x8 rims
27 on road(this still does not get the WHOLE tread in contact with road)
14 in rocks and general trail
10 in mud and sand
I have lost a bead at 8 or lower.
I have a under hood quick air 2 for the air up and any lower than 10, takes too long to air back up, and can overheat the air compressor. It is only a 30% duty cycle 1 hour pump, which means at 30 psi, it should only be ran for 18 minutes without a rest. It takes me 12 to go from 14 to 27 on all 4 tires
We spent a lot of time messing around with this, trying to find my Jeeps sweet spot. At 14 we get the air down traction, a much smoother ride and less fill up time.

December 28, 2005

between 10 and 15 depending on where im at. im on 31x10.50x15

December 28, 2005

I have to agree with Willybad, it really depends on your side walls. I have 33" x 12.50 Boggers and I run 10 psi all the time. Even on the trails I don't get that much side wall flex. Steve ran his tires at the same as mine and his side walls flexed alot more. I think that you need to just try out few different pressure ranges to see what works best with your rig, (tires rig weight etc.)
Russ

February 4, 2006

I have never aired down, running MT BAJA CLAWS, 33-12.50's. I think I am going to get bold with it and drop em next trail run. It just scares the hell out of me to break a bead on the trail!

July 10, 2007

I realize this post has been dead for a while, but I'm heading to the OBX and plan on going to the beaches with my jeep, I've heard stick to the packed sand during lo-tide rather than messing with the soft stuff up top, if Im going to drive for a bit. But still wondering whats ideal for my tires on road and offroad mud rocks sand and dirt. Ive got the BFG M/t 32x11.50s. If that makes much of a difference.

July 10, 2007

Ive run lots of sand in the past. as long as your on a 15 or 16 inch rim you can easily airdown to 10 and 15 psi. i usually run around 13psi in the sand on 15s. aired down you should be able to go anywhere you want. nd always air down all four tires. not airing down the front tire will let your front end sink and you will be pushing your front end around.

the only rims ive seen blow beads often are 16.5s

just be carefull on sharp turns, and if your not aired up on the street go slow and be careful on turns. i would not run on a highway aired down.

aired down on a trail is awsome, the ride is sooo much smoother adnd your traction increases in mud and rocks. even when i do easy trails i air down for the smoother ride.

July 11, 2007

i run between 7 and 4 psi. beadlocks are cool..........

July 15, 2007

For on road you need to figure your pressure in comparison to the tire you have for example: My Liberty takes 32psi with stock tires but with 32" MTR's anything over 30psi and I won't have full tread (or foot)! Off road I run 20psi. I found when I run less than that I wind up with a rim leak. Joe