How low can you go?

Test it and see-that's the best way. Depends on a LOT of variables. That said, the factory Moabs hold a bead better than any other wheel I've run. I regularly go to 8psi and do fine. At 6 psi however, it gets dicey as to whether or not I'll blow a bead. Mountainous terrain, lots of ledges, roots, rocks, etc, very steep and very off-camber. In sand or snow, I'll just pull the stem and wait for them to inhale air, then go. Sand/snow is very forgiving for air. If you do blow a bead, Co2 works great, as does any air source, even a bike pump in a pinch if need be-though it will take a LOT of pumping to get it to seat.

Best of Luck,

Mike

You will be surprised how hard it is to break a bead with no air pressure. The best way to test is to do as Mike said and keep trying until the bead breaks. Where I wheel, I tend to say between 10-15psi and imho, consider 8 to be the limit .

Thanks I will keep that in mind fellas!

I recently tried to break the bead on a golf cart tire by stepping on the totally deflated sidewall. Nope. Had to use my five pound hammer with several good whacks to break the bead.

will0856 said:

How low can I drop the air pressure in my tires and not worry about the tire popping off the bead. Stock Moabs, 33 11.5 MTR Kevlars.

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Sorry to change topics, but what metric size did you get and are you happy with the ride? I really want those tires, but don't want another load E tire. I know the 315 is Load D, but I believe both the 285 and 305 are Load E.

I've had my stock Rubi tires to 9 lbs twice on the John Bull Trail in So Ca. I never broke a bead. Tires were like jello.

I usually run between 6-8 lbs normally. I have never had a problem. What I watch out for usually is when I get a tire wedged down in some rocks and it is pushing the sidewall in. That's the only time I have really been worried but have been successful so far!

dpendergraph said:

I usually run between 6-8 lbs normally. I have never had a problem. What I watch out for usually is when I get a tire wedged down in some rocks and it is pushing the sidewall in. That's the only time I have really been worried but have been successful so far!

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X2

285/75/R16 they are a load range E but they do not ride that much different than my stock MTRs. And these are only the second pair of tires I've had on my jeep so I really do not know anything different. I like the tread pattern.

I normally run about 10, but will go as low as 6 if I need it... but I'm running beadlocks. :lildevil:

Around 12, pre-beadlocks. 8-10 beadlocks.

I usually go 6-8...no beadlocks here, never popped a bead. I do watch tire placement in the rocks..for the most part. :lildevil:

I've been down to 4 with my AEV Pintlers. Down to 6-8 range without Beadlocks. Worked fine

It's hard to pop a bead unless you are being whinched and the whincher is off to the side. I run my kevlars at 8 and have never wanted to go lower. If you have a nice day in driveway air down all four tires to various psi and see how much bulge you get. I didn't see enough of a difference between 8 and 2 on mine to give the peace of mind I have with 8psi.

When I had C rated 33" tires on 10" wide rims I would pop a bead at 12# if it caught a rut just right. Moved to 8" wide rims and had no problems at 8# to 10#. I now have 35" C rated tires on 9" wide rims and go down to 10# to 12# and have been as low as 6#.

I've run no air at all and driven on the roads (although I do not recommend). 37" Pitbull Rockers (very stiff) on AEV Beadlocks. On Moabs I would go with what others stated, probably stay around 8, better safe than sorry.

4-5 psi with hutchinson beads

I run 34x10.50 LTBs on moabs at 10 on the LJ. They flex very well, and never popped, but have a bead larger than most regular mud tires. The bad thing about pushing the limits is, it will pop, at the absolute worst (hardest) moment/place on the trail.