g-boaf wrote:warthog1 wrote:biker jk wrote:
Admittedly, at average speeds above 35kmh, wheel aerodynamics become more important than tyre rolling resistance, so a narrower tyre might be faster, especially if the wider tyre exceeds the width of your rim.
Either way, the difference is stuff all.
Ride what you like or what fits your bike.
It isn't about to turn any of us into a more competitive rider.
I didn't find a lot of difference at all between the 25mm and 23mm Continental GP4000S II tyres, they seemed about the same. But having switched over just by chance to the Specialized S-Works Turbo 26C tyres. Second ride on them today, they feel a lot more grippy through corners and they seem to roll well. I was sitting on a 35km/h average tonight (rolling hills and some gusty headwinds at times). Over a very poorly surfaced section of road (really coarse surface) they seemed a little bit more comfortable than 23mm Continental, but not massively so.
They are indeed pretty nice tyres.
I don't race anymore and I'm old. I cant really pick any difference.