As a kid I remember car tires seldom lasting more than 10,000 miles. Recaps were very common, especially for "snow tires. Then the glass belted tires came out and suddenly tire mileage jumped up to around 20K miles. Next came the radial tires and mileage jumped to around 40K. Bandag came out with a recap for radials that promised 60K of wear. Had a friend who had a Ford Bronco with Goodyear Poly steels that went 40K, then Bandag recaps for another 60+K. Tires still met minimums when he sold it. Today many tires carry a 70K warranty. Trucks used to shed recaps regularly due to under inflation. Since most trucks now have pressure sensors, you don't see as many "alligators" lying in the road. Most likely the fastest you have ever been was on a set of recaps. Care to guess as to where?