On my 350 i have 25" Mud Bugs 12" on rear and 10" on front. Excellent in mud, sand, snow. Rough ride on hard pack. Did find a loss in power. Just bought 25" Bear Claws for my wife's 350. 12.5" on rear and 10" on front. Going this Sunday to try them, we just got 10 - 12 inch of snow.