Originally Posted by
IamNed
A 2010 CAAD9 in size 52 has an ETT of 53.5cm. According to CompFitCalc and your measurements that may be a bit on the large size but doable. I have a CAAD10 that exceeds my CompFitCalc recommendation for ETT and wish that it was one size smaller, but still ride the heck out of it with a shorter stem. My primary road bike has a 1.5cm shorter ETT and fits perfectly. We are all different obviously, but in the future I will lean toward slightly smaller than slightly bigger for a road bike. Can you test ride both a 52 and 50? If so, pay particular attention to how comfortable you are with the drop of the handlebar. My preference for go fast as I can 35 mile club rides is to have more drop. For 80 to 100 mile rides I prefer less drop.
Thanks again. That's funny because size charts by height alone recommend size 54. Must be the smaller inseam pulling that size recommendation down. But makes me feel better because I'm going to check out a size 52 CAAD9 this morning from a craigslist seller. And as for being my first road bike, maybe a slightly less aggressive fit would be a good place to start?