I am simply looking to put a set of offroad tires on X rims. I have an X in the States and the MT21's worked great. The 120's did have a little tire rub on the fork, but I trimmed some of the side tread. I'm in Costa Rica and tire selection is slim anyway, but even more with the X rims. I talked to a distributor today and he said he has the MT60 in stock and recommended them. Actually, I had never heard of this tire. I just wanted to see if anyone might be familiar and has tried these. I'm think my best bet is to see if this distributor can get hold of a pair of MT21's.