Joined: Feb 2005
Posts: 13,560
Likes: 44
From: Milledgeville, Georgia
Bikes: 2018 Black Mountain Cycles MCD,2017 Advocate Cycles Seldom Seen Drop Bar, 2017 Niner Jet 9 Alloy, 2015 Zukas custom road, 2003 KHS Milano Tandem, 1986 Nishiki Cadence rigid MTB, 1980ish Fuji S-12S
I'm running a 12-30 Tiagra 10 speed cassette on my Roubaix now. Although the Ultegra RD is only rated for up to 28 teeth, it works flawlessly with no adjustments needed. The extra two teeth give just that little extra I had been wishing for on my steepest climbs and I don't miss the 11 at all.