Quote Originally Posted by Riff Raff View Post
The only downside to lowering tire pressure is the possibility of getting sand granules/dirt caught inbetween the tire bead & rim. This happens very easily when high "torque" (skinny pedal) input is applied as the tire bead will be slightly pulled away from the rim edge allowing sand/dirt to get trapped within the tire bead. This will cause a slow tedeous air leak when the tires are re-inflated as the tire bead can't properly seat against the rim due to the stuck sand granules/dirt. If this happens, the tires must be unmounted and both rim & tire thoroughly cleaned and then re-mounted-- a real P.I.T.A.!!!
x2, my trip to Moab was on brand new wheels and tires. When I got back, had slow air leaks in 3 of 4 tires? WTF?!!!! Turns out sand had gotten in there, was enough damage to score the seating surface of the tire, and they had leaks forever after. Not bad, had to put air in every month. Those tires went with the truck we traded in