I recently purchased an older (probably 70's or early 80's) road bike with a CILO frame and a Shimano 600 system. The rear wheel seems to have bursted and i am trying to fix it myself. I removed the rear tire as well as the tube. The only indication i found was "63 Made in France" on the tube/tire and "Mavic" on the rim. Judging by the list of tires on sheldon brown's website i am guessing that i must have a 27", 630mm rim. Now since these aren't around as much anymore i was wondering if anybody has experience with putting on a slightly smaller 700c or 622mm on a 630mm frame and whether this is a good idea or not....
Thanks for the replys.