Originally Posted by
fskywalker
On any given tire brand, 25 should be wider and more confortable (I clarify for any given brand since a 23 mm tire from one vendor may be about the same width as a 25 mm form another vendor)..
Also between brands. Compare a Continental Ultra Race 23 and a Continental GP4000 23. UR is much more narrow.
The Ultra Race 25 is about the same width as the GP23.
