In some cases with oversize tires, you will need an ATV Lift Kit to insure sufficient clearance around the fenders and other parts of your ATV. With 28'' tall tires you will usually need a lift kit, and in rare cases you'll need one with 27'' tall tires.
ATV Lift Kit
Standard 2'' & 3'' Lift Kits: The ATV Lift Kit is a bolt-on bracket system that bolts between the shock and the shock mount. When this lift kit is installed with stock tires and wheels, it increases ground clearance by about 2'' on average. When combined with oversized tires and wheels, you can get up to about 4''. (4'' additional clearance requires oversize tires and lift kit). The lift kit design lowers the front A-arms similar to the lift kit for an independent front suspension truck. The rear lift rotates the axle, raising the ATV. These kits are carefully machined to maintain proper angles.