Clydesdales/Athenas (200+ lb / 91+ kg)Looking to lose that spare tire? Ideal weight 200+? Frustrated being a large cyclist in a sport geared for the ultra-light? Learn about the bikes and parts that can take the abuse of a heavier cyclist, how to keep your body going while losing the weight, and get support from others who've been successful.
700c is not the same as 27, but they are very close. 27 in is 630mm and 700C is 622 which will explain the tightness you are getting. How wide are the rims and what size size tire are you running?
When i installed the 700c rim, I had to move the brake pads by literally 1 or 2mm to get them to fit the new wheel without rubbing against the tire.
The only place it matters is at the contact patch. I’ve done the calculations before and it works out to a few milliliters more volume. It’s tiny in the grand scheme of things.
There's also more sidewall to absorb vibration.
__________________ I stop for people / whose right of way I honor / but not for no one.
Originally Posted by bragi"However, it's never a good idea to overgeneralize."