its amazing what airing the tires down can do. i have the stock continentals which are at 75 psi. it takes me a while to air them down but once they are at 25-30 i can darn near idle over thick sand. i go to brigantine island n.j. to surf fish and theres trucks door to door up and down the beach, which beats up the sand pretty good. most guys forgetting to air down and i just roll right by em while they are full throttle trying to move in thier hummers h2's and import suv's, its hilarious.