I found NateTheGreat's post in one of threads about SM rotors with dirt wheels. The post is below. Please anybody with experiance write what you think. I would like to buy DRZ400SM and get set of dirt wheels. I live in a big city and SM setup is great for it, but I would like to go for offroad trip from time to time - my first will be by copper canion in Mexico.... Im quite inexperienced dirt rider, i will be really geratful for any help. Nates post: Exactly. Thats what makes it a supermoto. Get a set of RM wheels though and you get the best of all worlds. But.... another thing I noticed though is the fork clamps are specific for the DRZ SM. I.E. it doesnt use a caliper relocation bracket. It uses different fork clamps. So that means that you can't use a rotor smaller than the one thats on it. You can't buy an RM fork clamp either because the entire clamp + fork tube is sold as one unit I believe and is hella expensive. So if you were to get a set of dirt wheels you will be running a huge rotor and have super touchy brakes on the track.