Swamplites measure way bigger than any tire I've seen. My sisters 27s on her Big Bear were just as tall as my 29.5 laws with 5psi in all tires. You may need a lift, just depends.I have a set of 28x10.5x12 Swamplites that I would not mind using on my 700 Prairie but don't know if a 2" lift is required or what.I really do not want to cut the plastics or mess with the floor boards.Are spacers a must with the stock wheels.Sorry I am just coming off a Grizzly with IRS so the Prairie is a new beast.