I currently run Cooper WW Radials on my '53. 235/75/15 on tubeless rims off a '50's Suburban with the inside clips so I can keep my original hubcaps. I took it out for a drive with my gps to test the speedometer. My speed was dead on from 15-55 mph. I used to roll on the original 16" rims with Allstate tubes and Allstate repop 600x16 tires. Bias tires never felt safe and were very expensive to replace over the years.