2007 Yamaha Grizzly 700 FI Auto 4x4 Ducks Unlimited Edition Make: Yamaha Model: YFM700 Grizzly FI Auto 4x4 Ducks Unlimited Edition Year: 2007 Compatible Tire Sizes: 25x8-12 25x10-12 Stock Tires Size is 25x8-12 Fronts with 25x10-12 Rears.