[RodnRudy]

I purchased the tires for my 68 C 10 from Discount tire and ran into the same problem. They're car tires 235/50 18 and 255/45 20 Cooper Zeon RS3-G1 so they wouldn't mount them. I took the wheels and tires to another shop and got 'em mounted and balanced no problem. Liability issue at Discount I'm sure. I've used that place for years and no problems with car or truck tires.