Think this is my biggest change of getting a solution on my problem. :p First of all, I have a CB350 twin from 1969. I about to swap the fork on the 350 to a fork from a CB500 to get the front disc brake setup. On this 18" rim I know I can fit a 4.00 Firestone Vintage tire (have that setup on...

Hey guys, as the title suggests I'm looking at Firestone Deluxe Champions. I'm pretty new to the motorcycle scene so I don't know too much on specific sizing and "do's" and "don'ts". I have a 1972 Honda CB350 Four which needs new tires. My main question is, I have 18's on front and back, and...