So many real world vintage car owners just cruise their cars- drive them to work on Fridays but the TV show car builders say they use the 20" wheels for better handling and to accommodate huge aftermarket disc brakes. How many muscle car owners are doing a road course? Yea 15" tires are getting rare and don't have a high speed rating but again- most cars are doing shows and cruises anyway. All the cars I see are out for a show and shine- cruise thru town and then back home. Big wheels and big brakes and slammed to the ground needed for this? Around the year 2000 the term "Pro Touring " came out and many a vintage muscle car became the victim of people like Foose starting at this time.