Originally Posted by
chasm54
I disagree with the suggestion that you can't get anything bigger than a 25mm tyre on some road bikes. It depends on the geometry. On most of those the OP has linked to, I don't think a 28 would be a problem, if he needed it. And anyway, I ride over some rough surfaces on 23 and 25mm tyres with no problem.
I doubt it. Maybe the Roubaix, but I'm certain NONE of the other
road bikes listed will even come close to fitting 28's. And they're probably even very tight switching from their standard 23's to a 25.
I have several older steel LeMond frames that came with 25s and looked like they'd fit 28's, --but none of them do. My Trek 5900 is so tight with 25's I declined to ride it (and it just hangs in my basement).