hi gf, i've got an 03 250 that spends some time on the sand. 10/11 psi and even those stock tires should be able to go anywhere. i regulary drive w/ underinflated tires to/ from the beach w/ no problems, but like the man said just take it easy. i would recomend a set of tire deflators - while everyone else is airing down you'll be heading for the beach and the fish. good luck, paul
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