Originally Posted by
gtragitt
Did you run a longer chain than with the 11-28? I am thinking ahead for the Ride the Rockies. I am not a Mountain Goat like jppe; so, I may do better with a 32 sprocket. I think I can make it with 28, but I may get less fatigued with a 32. My bicycle is the same model as yours but a year older. I did upgrade to Di2. I really like the 11-28; so I may take an extra wheel with a Tiagra 12-32 with me.
I did not need a longer chain going from 11-28 to 12-30, but 12-32 might be a different story. I have no idea whether the Di2 derailleur would work with either the 12-30 or 12-32.