Originally Posted by
wgscott
I think he means how fat a tire could you cram into the frame? I'm curious too. I'm going to guess 28mm.
One approach I use is to find the smallest gap and measure it with a hex wrench.
I took a scale and measured from the side of the tire sidewall to the inside of the fork tubes and there is about 75mm on either side. A bit less in the back, about 60-65mm on either side. If 28c tires are taller as well I can take that measurement as well.
Originally Posted by
Hobbiano
Do you think 28's would fit and not be to close to rubbing anywhere?
See above. If I has a 28 c tire on-hand, I'd mount it and see. If you're seriously interested in the bike and want to send me one, I'll give it a try and let you know.
Originally Posted by
wgscott
Oh, as long as we are being annoying, any idea what year it is?
No idea, but a
Reynolds decal PDF I just referenced says 531 Professional tubing was fist made in 1981 and was discontinued in 1988.