Originally Posted by
niknak
A 31.7 TT seems oversized for such a small frame. Are you around 5'8"? Unless you're a really powerful rider or pretty heavy or both, I'd suggest moving to a 28.6 TT and 31.7 DT. Then you don't have to worry about ovalizing the TT to fit the ST.
Also, with a front center of 606 if you're using large 700c tires you'll likely be flirting with toe overlap. Some riders don't mind it, but I hate it. One solution is to push out the front end and shorten the stem. If you're running 650b then you'll probably be fine, but it's something to consider nonetheless.
Great points. I mainly choose the tubes because I like the look of slightly larger tubes but then again the ST is only 28.6-29.6 so a 28.6 TT might look more aesthetically pleasing. Not sure.
Yeah around 5'8" and I’ll be putting a pair of 650b 47c tires on there. Last time I checked the drawings it looked ok with the toe overlap but I’ll double check that because it’s also something I’d like to avoid.