Hi, I want to get a new set of wheels and tires to go full offroad. I want to put Michelin AC10. Front: 80/100-21 rim size: 21''X1.6'' Rear: 120/90-18 rim size: 18''X2.5'' I can't find any wheels that fit my specific model... I call the president of Warp 9 and he told me that they tried to fit offroad tires on the sms 630 put they could not clear the big radial Brembo caliper. He told me i would have to change forks to fit 21'' wheels. I don't know if the back tire would fit either. I just want to be able to swap the wheels when I want to go offroad or on road. If anyone can help me out it would be greatly appreciated! Justin