Motorcyle RIMS and TIRE fitting
Is that 1.20 inches or 120mm? 1.20 is way too skinny for a motorbike, more like a bicycle wheel. In either case, a 70/90-17 will not fit.
Ask ur mechanic if its a dirt bike the tire may fit on the rim but maybe not the bikes swingarm or may take out ur silencer if u bottom out to hard
Motorcycle manufacturers, Dunlop for sure, probably others, can tell you what tires fit what rims.
