I'm 5'7" with a 30.5" inseam and a proportional torso to somebody my size. I've been riding my Steamroller for about 3 weeks and it feels pretty comfy. I love the way this bike rides, it is quick and stupid responsive. I feel very in control when riding it, and I like how I can move around on the frame and not feel like I am on something too big. All of the typical measurements of leg position, crank length, femur length, and reach to the bars seems correct, but I have about 2.5 inches of standover. The guys at the LBS who have been riding fixed for years sized me to it and say it is just right.
My problem is this: When ordering the bike I got my inseam measure too small by an inch and a half (my bad) and am wondering if I didn't screw myself. This is the first road bike I've ridden in years and I am not entirely sure if I am just fooling myself into being comfortable on this bike or if I am just adjusting from riding a mountain bike that was too big.
So basically is a 49cm (C-T) too small for a guy who is my size? What aspects of the ride should I look for to determine if it is right? Also, I haven't developed any pain in the legs or back.