Fitting/test ridequestion

[Ritamarie]

If I remember correctly Surly sizing is large compared to the "big three" and lots of other high volume builders. So you'd need a Surly sized 1-2 sizes lower than you'd take on say a Trek.

Yes, I believe Surly measure center-center where the others measure end-end, so the size of your Surly should be a cm or two less than another bike of comparable size.