Originally Posted by Rosso Corsa
How much more average speed are we looking at in the end though? 2-4 km/h?
Much less. When I run my 700x25 Michelin Carbons on my cross bike it's only a hair more than 1.0kph slower than my race bike. Most of that can be accounted for with the 2-3kg. weight difference.
I lose another 1.0-1.5kph going from the 700x25's to the 700x32 Vittoria Randonneur Pros. This is my preferred setup as I only lose 60-90 seconds on my commute, I'm much more comfortable, it handles the one high speed, gravel covered corner much better, and I don't sweat going up and down curbs.
I lose about another 1.0kph (road speed) going from the 700x32's to 700x35 Mythos CX Slicks.
Yes. Laugh all you want. I have a tire fetish.