Originally Posted by
Barrettscv
You might consider wider rims than the Open Pro. Velocity A23 and HED C2 are 23mm wide and a good match for a 700x28 rear tire on a touring trip.
I'm not sure a 700x28 will fit on an RS. My 54cm RS won't take anything larger than a 700x25 in the front. There's a bit more space in the back, but the fit would be pretty tight for a 28mm. A larger frame might offer more tire clearance, though clearing the brake calipers will still be an issue.