Originally Posted By WarBird
Martyn (spelling corrected smile ) - I'm thinking lower profile rear tyre for hillclimb and sprint (and maybe racing) where lower gearing and reduced sidewall flex would be beneficial.

Ahh, fairy nuff. Is tyre roll/sidewall strength a problem on the rear? I can see the sidewall strength at the front is an issue but for fairly obvious reasons, it's a bit hard to see what is happening at the back.

1930 Super Sports Aero 'The Elk'