I have searched the web till I am dizzy. Maybe you can give me a short-cut.1964 Dodge B body. 15 X 6" rim - zero offset. Tire size on it now 225 - 75R - 15Problem: the front of the tire rubs the lower fender well front edge at the bottom..I need a smaller diameter and maybe a little narrower tread & section width.It must be blackwall ( No raised white lettering ) and as plain and smooth on at least one sidewallas I can get. Easier cleaning and I like that look. Brand not important and not high priced.What are you useing that may work for me? Thanks for any input.......................MO