No sports spectacular anywhere rivaled the Indianapolis 500. In 1962 Mickey decided to enter with rear engine vehicles rather than the front engine roadsters of the time. The technical committee challenged nearly every feature of Mickey's cars but when they finally passed, Mickey failed the medical, leaving his mechanic as the driver. "You can't win your first INDY, there's just too much to learn." Mickey returned with lighter vehicles requiring tires that were wider with a 'lower profile' and softer compound rather than the usual narrow tires with a harder compound. Mickey's tires and vehicles caused complaints amongst many drivers leading to changes in the rules for future races but paved the way for 'Low Profile' tires, standard in today's passenger tires and the tires you see in Indy car and Formula One racing today.