On May 17, 7:27 pm, thirty-six <
thirty-...@live.co.uk> wrote:
>
http://velonews.competitor.com/2012/05/news/giro-tech-rise-of-the-25c...
>
> I did notice a big difference when I stretched my training tubs from
> 23 to 24.Xmm There may simply have been an advantage in flattening
> the seam and sticking with a thinner mastic bed but I borrowed some
> racing wheels with 23s on and I still felt my training tubs were
> easier and faster.
I switched to 25s a long time ago. The higher volume makes for a
better ride. Currently using Challenge Paris Roubaix
tubs - approx 28mm. I only have about 80 psi in them. Very comfy.