HLaB
Marie Attoinette Fan
On the GP4000s Ive found the 23mm's fail often at the side walls and wouldn't use them for a commute but Ive had 25mm's on my commuter for 2500miles all through winter and got 1 p'ture, a few weeks back. The 25mm's have probably done a bit more as I did last year's Flanders on them :-) I have Mitch Pro 4 Endurance to replace them when they eventually wear out (great tyres IMO, roll almost as good and grip as good as the contis but much more robust and durable). I am looking for 25mm replacements for the contis for the up and coming summer for fast sportives and club runs but I can only see them in stock on one site and it wants to charge £12 more compared to the 23mm :-(