Originally Posted by
one4smoke
So, I've been contemplating replacing my Roam 2 with either a Specialized Sirrus Sport, Giant Escape 1 Disc or Trek FX3 Disc. I've ridden the Escape and Sirrus, but the FX3's are all on backorder.
Now, here's the thing with size... We have two dealerships in town selling Trek bikes. I'm 6'4" and mostly legs make up the height more so than torso. One LBS says I need a 22.5. The other LBS is recommending the larger 25. Obviously, neither shop has this particular bike since it's not available yet from Trek, and neither has any type 25 bike. My Roam 2 is an XL size and I've never been on a 25 bike. If I decide to go with the FX3, I'll need to pay up front before they order, so whatever size I order ..I'm stuck with.
Which size seems right?
The geometry chart shows little difference between XL and XXL; the 1.3cm (1/2") top tube difference is due to a a slacker seat tube angle. The only difference is a 3cm taller head tube (2-1/8") so if you like your bars high, go XXL. If you like a nimbler and lighter frame, get the XL.