I painted the rubber on the road wheels tonight, using a masking "cap" I made from one of the Hobby Boss road wheels. It turned out that the HB wheels are a tad larger, such that the steel part just fit over the outside of the Bandai steel part. I machined off the tire on the HB part and tapered the outside of the steel rim to a feather edge and it worked just great. I''m getting my money's worth out of that HB kit!