Just went today with new 2019 Rzr xp 4 1000 that I put 32x10x15 on for its first ride. We mostly Rock crawl and never had them hit anything. I will tell you I smoked the belt a couple of times going up some big boulders. However I dug into Hunterworks site and realized I do not need a clutch kit with the kind of ridding we do. They make a Quiet Thick Belt that will take care of turning the bigger tires. More info than you may have needed but may help you in the long run.
Dusty.