exactly which 1990 hurricane do you have? I'm guessing it's the 1990 CBR600F1. not listing Kenda, Shinko, IRC, etc. there are reasons that cheaper tires are cheaper. Dunlop recommends only the GT501 Dunlop GT501 Arrowmax, bias ply, performance, V-rated Bridgestone recommends only the BT45 Bridgestone Battlax BT45, bias ply, sport touring, H or V-rated Avon recommends only the Azaro-ST(AV45/AV46) Avon Azaro-St(AV45/AV46), radial ply, sport touring, V rated Metzler doesn't list this model Michelin doesn't list this model Pirelli doesn't list this model Maxxis doesn't offer a tire selector Continental lists some very different size tires that will fit. (and disclaims responsibility) Crazy discount motorcycle tire website that has them all: http://www.tiresunlimited.com/motorcycle_tires.htm In general, stock tire sizes work best with stock suspension. In general, a lower profile can be used if the width is increased one notch. In general, a lower profile will decrease the vehicle load rating. That's the reason for going one extra width; to get back to the original load rating. Guessing that 110/80-17 can be replaced with 120/70-17, usually. (I wouldn't change front profile more than one notch.) Guessing that 140/80-17 can be replaced with 150/70-17 or 160/60-17 or 170/55-17, usually. There are definite limits on width. I like to look up DOT tire design specifications before making decisions. To the limits of the rim width design recommendations of tire widths allowed to be mounted. Do not put a tire on a rim that is too wide (or narrow) for the rim. Will the handling change? Of course it will. Will it be ok? 50-50% chance of happiness. Will the new tire clear the swingarm, chain, fender, etc? Maybe, maybe not. Should both tires change profile or width at the same time? Generally, yes. Would I do that? No, I've tried all sorts of tire changes, and I prefer stock sizes. Not that some changes weren't fun to try. It's just a lot different from stock handling.