I have about 35K on a set of michelin at's on my daughter's jeep. Quiet, good road grip, even in heavy rain on the mountain roads where we live. I like them alright on the dirt roads, but they are too mild for sand. (Got stuck fust a few feet away from other rigs camping at the beach...) As far as I know, a new tread can be put on most tire carcasses. Have you checked out Hi tech retreads? They put new treads on (mostly, but not limited to) BFG 's. First heard of them in an ad in Jp mag. I recall that a 31" with mild mud tread was less than $60. I don't have the web address handy to pass on, but I can look ...