I have an 02 prairie 650 it has 25x12x12 rears 25x9.5 x12 fr I would like to have the same all the way around. I'm not sure If anythings been done to the clutch springs to handel the larger tires. stock size rear 25x10x12 fr 25x8x12 I wont 12x12 or 10x12 front & back. I like the extra ground clearance of the 25x12x12 I just don't know how much it would effect it to put 25x12x12 on the front if it would cause front diff or clutch problems. it seems most utlity quads have smaller tires on front from the factory but theres a pretty big height difference on mine.