New here. My son just sold his honda rancher 420 and got a yamaha grizzly 700. He wants to change the stock tires and rims. I had researched and found out maximum size he could go on the rancher before he sold it. Now looking for info on the yamaha. Salesman told me that if we went up above two sizes over stock it voided warrranty, hard to believe that because one dealership was putting 28 tires and rims as a package on a new one I had called about. 28 would probably be as big as I would want him to put on there.