WIll a 110-80-18 work on my BRP? I have a new MT70 rear in that size. It has 120-80-18 MT21 on now but wearing rapidly. Front looks good. I have a new set of MT90 Scorpians that came with the bike but were never mounted. Anyone had these on and do they make a big difference on the street? Would much rather run DS tires if it's not a "huge" jump in dirt and street to be switching back and forth. (which I'm assuming it IS) I hope to do a few DS rides and maybe some other occasion trail rides. Most miles with be around town. The 21's feel "ok" on the street, but kind of good as they keep my speed down.