 The sponsors were very pleased with the publicity generated that year so for the 1963 Indianapolis 500 Crosthwaite produced the innovative Harvey Aluminium Special ‘roller skate car’ with the then pioneering smaller profile (12-inch diameter) and wide racing tyres (front 7 inches and rear 9 inches wide) and wheels.Because of the small size of the front wheels Crosthwaite had to work out a way to mount the front brakes inboard in order to get a reasonable size disc.It was the first time that this had been attempted.