This may sound ridiculous but I need help to determine whether the rims I have are 17” or 17.5”. I’m about to order tires for my ‘58 3/4 ton Napco project and I don’t want to order the wrong size. I posted pics below of measurements. Overall rim width is 7” and overall diameter is 18.5”. I don’t see markings anywhere on the rim that would indicate size. Didn’t Napco trucks come optional with 17”, 17.5” or 19.5” rims? It’s a 3/4 ton 1958. Any help would be appreciated. Thanks.
