Originally Posted by tlupfer
specialized borough cx has a slick center section, maxes at 100psi, and rolls quite well. it does have tread at the edges though.
as for clearance--how much do you have now? imagine a tire that is a bit larger. will it rub against anything?
+1 for the Boroughs. I have the Pros and they're tough as nails! I run anywhere from 75-max psi depending on whether I'm commuting, touring, road riding. You get the idea, the Boroughs are versatile.