I have had my stock tires on my quad since I bought it a year ago and they are already like racing slicks...I'm having a hell of a time finding the stock tire sizes. Cheapest I've found is on rockymountainatv.com. Had some Kendra cutters for the rear at $60 a peice and for the front some dunlops at 32 a peice. Not bad I know, just looking and seeing if there is any other tires ppl know of I can put on..especially the rear tire size of 22x9x11. Or does anyone recomend different wheels that run good with the IRS??