I have Razr 2's all the way around. Awesome wear, and they go thru everything, even when I am mowing down lil sapplings. I just flipped them around due to some road riding, so they were starting to cup on one side, but they have been on for a year. I am running them with slime, and not even one puncture yet, and I ride some shale beds.
2008 700xx; Power Bomb header with power core 4 exhaust, Power Programmer III, pro armor nerfs, prm products control front and rear bumpers and full skid, 10" ITP rears, ITP Baja's fronts, RZR 2's all the way around, Uni filter, 13t sprocket, CCP steering Damper, DS450 shock swap, Dual Gasser Throttle, bar risers and Moose barkBusters. 730XX kit plus other engine mods!