Original U S Royal Redline
I posted this on another Pontiac forum and there has been quite a bit of interest so thought I would do the same here. My '66 GTO still has the original U S Royal Redline spare tire in the trunk. Had it out the other day and decided to take some pictures. The tread width on this tire is 4 1/2 inches. The height of the sidewall from the edge of the rim to the top of the tire is 5 1/4 inches. The tire is still in pretty good shape and holds air well.
1966 TriPower, 4 spd, PHS documented.