Gents- thx for your input- The Avons on the car right now are Non DOT, non-radial, no-tread, soft as a baby's bottom, race tires.. text on the tire states: "NOT FOR HIGHWAY USE"- ALSO- since they're such soft rubber- the tires pick up every rock/stone like a vacuum, and throw them up into wheel arches. no good.. so I need street tires- also Keep in mind, my car is the widebody- universe to choose from is limited-MickeyThompson makes a tire, but its a very high wall tire (i dont like) and besides it wont fit my wheel arches- and I'm not raising the rear (obviously).. I want to obviously be set up for street and track so the 15" Brms/Avons will be my track setup and the 17"/Pirellis will be street. and I really have no prob with the 17" vs 15" look... Kurt