[1960HDGMC]

Excellent synopsis, Barry, I am considering changing tires. The choices I have in mind are the LT's you mentioned, and the factory Firestone Champions produced by Coker, in the original molds. They offer true blackwall, as I assume they all shipped with, and whitewall. I have also been trying to learn the correct size for my factory wheels. They make a 6.7-15 and a 7.10-15. I have uploaded a picture of the tire sizes from 1960 GMC literature. It shows a 7.10-15 as standard. I have 15 inch factory wheels. Is there an upgrade or just plain better size for my tires than the 7.10-15? I see some a 4 ply and others 6 ply rated. Is that a factor for a light truck like mine? Are bias ply tires hard to get used to coming from a life spent on radials? The tread patch looks rather narrow. Maybe my mileage will go up a little. They look cool, and I guess you could say they are correct, but I wonder did they ship any trucks with the whitewall version in 1960. They sure pushed the whitewalls in there ad material, almost exclusively. Any advice appreciated, Greg Mead