seems my 09 had trouble burning them off towards the back, i would imagine my pro is going to be the same, a kit in the back would probably eliminate that. on my 09, instead of replaceing with oem hyfax, i removed all the wheels off the assault and put hyperfax slides on it and forgot about it, they didn't wear at all. on my pro i put hyperfax on that and removed the only set of wheels on it. i do know these sleds like snow, the tall lugs, less cooling, and less wheels the hyfax should wear faster and engine heat up faster, at least they finally added scratchers as standard equipment.