So I'd like to set up my old Lemond Buenos Aires with fenders to make it a more proper winter and spring training bike. I'm looking at the Crud Road Racer Mk2s.
The problem is that there's scarcely any clearance on the bike with 25s on it, so I'm going to have to go with 23s, at least on the rear, to get even the slim Cruds on there. With the 25s, for example, I can get a 1 Euro coin between the tire and brake bridge with just a hair to spare, so I'm guessing it's about 2.4-2.5mm clearance. I don't know if that's enough for the Cruds, but I'd be surprised if it works. So, I'm looking to downsize tires, unfortunately (though it is cheaper than buying a new frame, which I can't do right now).
Ideally I'd like something with a diamond file pattern, such as you'd find on a cyclocross tire, but I can't find a cyclocross tire in a narrow 23. I'd be happy to go with just about anything -- the Vittoria Rubino Pro Tech looks cool-- but don't know what's out there.
Any tips on 23s with a little textured tread good for cold, slop, slush, and muck?