Originally Posted by
doublezer0aym
The two bikes I'm trying to compare are 52cm Trek 1200 and a 53cm Specialized Allez 2011. Hope that info helps.
If the trek is not compact and the allez is compact it's a big difference. I ride a 56 trek 1500 (not compact). It's a touch on the big side, but fits fine. If I picked up a tarmac or allez today a 54 would fit perfectly. A 56 would be way too big.