It has a lot to do with how you drive and your knowledge of or should I say “Feel” for the car along with maintenance. My 2014 xp41k tossed a belt at 1100 miles. Mostly dune miles with all seats occupied. I sold that SXS with 1300 miles. My 2018 xpt has just over 1000 miles with original belt. Both had stock clutches running Polaris belts. Can’t drive wooded for long periods of time. Hammer down on the straights and let out in the corners. Just letting out of the throttle for short periods of time will keep the belt temps down. Blow the clutches out after every trip. Break your belt in properly and they will last. If you are impatient, than break the belt in early in the morning. Swap the belt out and break in the next belt. That way if you do blow a belt duning, than your spare is already broke in and ready to haul ass. These have worked for me.