>>1866328>Would the limiting factor be the calipers or the clearance on the chainstays?As a steel fetishist, my experience is neither. (Disclaimer: I won't ride a bike with a unicrown fork.)
With olde touring bikes, 38mm is a reasonable number. For faster road bikes, 25mm is probably the limit, without modification. Both of those are without fenders.
The part that contacts the tire is the bit of steerer tube that sticks out of the crown lug underside. But it's an easy task to take a half-round file and remove material until your tire fits. Tite gapz, right?
With multiple frames/forks, I've been able to fit a 28mm in the rear 'naturally', and fit the same in the front with this small modification.
>>1866335>Fast old bikes are generally maxed out at 25 or 28Matches my experience.
>>1866345Tasteful.
>>1866346Not that I know of. Mostly it's vintage catalogs. You look at what they spec for the bike, and figure that's pretty close to the limit. This is disregarding the whole 'how a tire fits on # width rim" thing.
Lower-end bikes ('sport tourers' etc) usually had more favorable clearance for going the next tire size up.
