New 26-inch and 27-inch sizes for 12-inch wheels! The STI Out & Back Max tires feature an aggressive tread pattern and true sizing designed to power today’s everything through the mud, from large-bore UTVs to mid-size ATVs, and then get them back in comfort. In sizes from 26 inch up to 36 inch, the Out & Back Max tires use stepped-lug construction and a rugged carcass for trusted performance in the sloppiest conditions.