Anything past 18" is a waste. More modern Corvettes used 16, then 17's then finally 18". when you copy a vette you should do ok. Better brakes ask for larger wheels for clearance. Anything after an 18 inch means bad ride and too stiff a sidewall. I think the R&D on sports car up into even the more exotics shows the trends, even where bling and money is no object.
Just a week or two ago there was a black SUV involved in a freeway chase in the Los Angeles area. I saw the end of the chase and the crash. He went a little squirrly and couldnt recover. He hit the center divider. The truck filled up inside with smoke, and i couldnt tell if it was just from the rubber, a wheel catching fire because the rubber was so thin and failed, or an actual fire/steam from the engine compartment. Regardless he could have had much more chance to get away away on OEM's :) the guy was sittin on at least 22" wheels.
No I dont want people to get away, don't root for the bad guy, I want to see a conclusion with little damage to property or person. A good chase is a good chase is all I'm sayin :)