Oh. :-( balls!
You don't think you could squeeze a 24 in there?
So you running 23 Conti 4000 on the front then?
Maybe I should just stick with the supersonics then.
Always good to know they fit before you blow $200 ish on a set of tires!!!

Man, 24 would be tight assuming TC's fit like conti - a little wide. I'd be worried about picking up a pebble and wedging in there.

Think I will stick with what I have then. Maybe increase a little on the rear.

Phil

Sorry for the necropost, but what IS the conclusion of this thread??? I'm currently running 23mm GP4000S II for road racing. I have a set of 23mm Corsa Speeds on standby. Should I switch to the Corsas? Or should I go back to racing Turbo Cottons?

Why Turbo Cottons? They have been shown to be slower aerowise and no faster than the SS.

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That's why I'm asking. Assume low yaw (which is generally the case in road racing anyway). Actually, assume one of the three tires mentioned. Which would you pick for road racing???

A. 700x23 GP 4000S II (I currently race and train on this tire - it has been reliable as hell)
B. 700x23 Corsa Speed (Own it, but never installed)
C. 700x24 Turbo Cotton (I've raced on this in the past. It feels fast, but doesn't feel as grippy as 4000S II in the turns. Plus it cost more $ and doesn't last as long as 4000S II)

I would choose neither, I would personally go with the SS. If I didn't run an SS on the back I would go with the new 25mm GPTT>

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I TT on SS front, GP TT rear and road race on the vittoria corsa speeds (tubeless). I was road racing on the vittoria corsa g+ in 25c, but the rr tests of the speeds compelled me to make the switch. TC gives up too much aero for TTs, but makes a fine road race tire.

GP4k is an awesome training tire - still working through those on other bikes, but don't race them any longer.