If you go to 22" over stock 20, you may want to regear to get the "grunt" back for hill climbing, or you may find yourself downshifting to get up the steeper hills. The 400 has plenty of power for the 22" tires, but if you really want a hill climber, maybe stick to 20", or spend the money for a different sprocket set up to keep gearing near stock levels.

 

Alright well my friend might go visit his parents in Tampa and I'll get his new tires to try them out till he comes back. If I don't like them I'll stick with stock. I was also thinking about bigger since there's alot of big rocks here. And I am constantly hitting them