Originally Posted by
SkyDog75
How wide are your particular rims? If the interior width is roughly 15-19 mm, you're within the ideal range for 28 mm tires according to
Schwalbe and the ETRTO, as well as
Sheldon Brown (click the links for more tire/rim sizing info).
They're Bontrager Mustangs. 19mm internal width. Bontrager just released new road wheels with a 19.5 internal, which seems crazy, so it seems 28s should be fine on my Mustangs. Thanks, all. Also, I'd run them with tubes.