Originally the '66 came with measly 14-inch rims and P195/60R14 tires. It would have been nice to utilize them with the new brakes, but they just wouldn't fit. We didn't want to go crazy with large rims or huge tires, so we went with a plus-1 rim all around. Our rolling stock of choice were Vintage Wheel Works V40 rims, 15x7 in front and 15x8 out back. The only differences between the two are their width and backspacing. To fit over the larger 11-inch rear drums, the rims were ordered with a minimum of 3 1/2 inches of backspacing, as specified by Master Power Brakes.