It is. Unfortunately tires matter. And to put any performance upgrade to a standard tire size will result in poorer performance. Even with today's softer and better performance tire options.Is it possible to build a pro touring car that doesn't LOOK like a pro touring car? Something brutally FUN to drive and drive everyday, but that does NOT look like a pro touring car. Something that looks like a regular hot rod build, but will handle very well, and basically BE a pro touring car. NO huge wheels and ultra low profile tires. More like 235 60 14s. Not slung down in the weeds......but not sittin WAY up high either. No offense to pro touring cars, I know we have some on here. It's just not my cup of tea as far as the LOOK, but I wouldn't mind the handling characteristics.
I think the best compromise is a mini tub solution. It's not cheap. But depending the beginning platform? It does give with bigger tire option a fighting chance. While maintaining some stock appearing stance.