a company in ny called green dimond makes retreads, they have a 31 10.5 15 and they copy the geolander mt' tread desine. I bought a set for dd ranger. there great off road. they only clean out under high rpms. witch I can't crawl threw the mud anyways. yea don't walk behind me, I had a problem with them slipping on wet payment. but that was when they were new. I love the tiers and the ranger has so chopped up from the twin traction beam that they make so much noise going down the road. all in all I think there a great tier, and they will probly were better being a name brand.