Older than dirt
Join Date: May 2008
Location: Winchester, VA
Bikes: Too darn many.. latest count is 11
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I would consider 32mm to be the minimum, but I usually will pick one of the bikes running 35's or 38's. I've run it at speed/unloaded on my cross bike on 32's, and probably could have done it on 28's but it sucked a lot of fun out of it 100 or so miles in.
Had a pair of guys two years back that swore a road bike on 25's was perfect. Running north to south I ran into them at Paw Paw where they had stopped to buy foam pipe insulation for their handlebars and said they'd had a dozen flats between them.
You don't need agressive tread for the C&O, a road hybrid style tread design is perfect.
Last edited by CCrew; 04-24-11 at 09:36 PM.