Raf940, that's a 19" rim with a 90/90H19 Roadrunner on it, I guess the lower profile makes the gap look bigger. The Roadrunners sure suit the bike, lovely straight line stability and cornering. It's an 4.00H18" on the back and it just fits in. The brake, as far as I know, is a stock 8" 68 BSA (Triumph) item, it measures just over 8" anyway... :bigt:

Wondering what the next project will be!