Had an 11" wide RZR wheel with a 10" wide tire. Not a perfect size combo but it looks nice and works fine. Even if you use some ratchet straps, bullet oil and fill this tank up to 110psi it will not be airtight. I was thinking of returning it for the 10 gallon model but I got myself a couple of videos viewed on youtube showing the wheel and nozzle orifice pointing towards the gap between the wheel and In one video a man placed a tank nozzle directly into the gap to the inside edge of the tire and completely ignored the guide This strategy, combined with on board oil and belts, allowed this tire to seal 2 attempts for both 11" wheels. USE headphones!