Originally Posted by
audiomagnate
The OP is looking for a 28 or 32 that will go off road and I'm pretty sure these don't come larger than 25 and I wouldn't take mine very far off road.. Vertyg, do you think Continental is selling the exact same tire as a 23 and a 25? The 25's are definitely much bigger than Gatorskin 23s FWIW as they won't fit on my Cannondale Six 5.
I was responding to [MENTION=418370]canklecat[/MENTION] and his suggestion to try the Continental 700 x 25c Grand Prix Classic tires... Should have clarified that.
At the top of my post I mentioned 32mm Paselas and GKs. I'd only run tires 28mm and larger off road or on consistently poor pavements.
As others have mentioned, some Continental tires tend to measure on the small side.
The two Continental tires I mentioned are completely different.
What I suggested is that the 10 year old 23mm Continental Grand Prix tires that I have, run about 24mm on all of my wheels - maybe 5-4 different make/model 20mm wide rims - Mavic, Super Champion, Rigida, Ambrosio, Campy... Always have.
The 2 sets of Grand Prix Classic 25mm tires that I have, run a little small, closer to 24mm. One set is on Mavic Module E rims, the other is on Fir or some other smaller brand rims. In time they may stretch out a little.
What rims did you try the Grand Prix Classics on? How much pressure? At the suggested 125 psi they may bulge more??? I run mine at 90 psi.
We're talking 1mm difference which is only 0.039". It's less than 1/16" which is 0.062". So the real differences are not very much.
I measure both the width of the tires and the height from the outside of the rims. Those dimensions can vary from tire to tire, rim to rim. I don't think that you can get an exact consistent dimension because the listed tire sizes are approximations and tires can seat differently in the rims.
Another thing, because of the reinforced casings, Gatorskins are not going to stretch much so they will stay closer to 23mm.
All the 25mm Paselas I have measure 25mm height and width....
verktyg
