Originally Posted by kamtsa
I hoped for slightly more info than that ;-)
Can you tell me about your experience?
I'll give you some conjecture and a little bit of anecdote.
I put 20x1.75 marathons on my Moulton TSR and they were very satisfactory. A bit slower than the stelvios that it came with. The moulton has suspension front and back and I blew them up rock hard and they were great. However, had I not had suspension, I might have found them a rough ride. The bike was very sure footed with the tyres at 100psi (measured on my workshop pump so a bit of plus or minus could be applicable and I don't know which).
I would say just try different pressures and evaluate the speed against rough ride continuum. I bet they'd be fine at about 55 psi on an unsuspended bike, but you'll have to try it and see. There are so many variables in the rider's preference / road surface / tyre pressure / tyre type equation that I doubt anyone can just give a simple answer.
Anyway - experimenting is fun and passes the time.
Last edited by EvilV; 03-28-09 at 01:31 PM.