Originally Posted by
sstorkel
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.
25mm is the max up front, but there's plenty of room for 28mm at the back. In the pictures I have 25mm ultragator skins on front and back