Originally Posted by
NormanF
On a road bike you can go up to 30 C. Maybe 32 C but that's it. A bike shop mechanic can advise you on what is the max tire size a Jamis Quest will take.
And to expand on that, some are even less. I think the Trek 1 series is 25 or 28 depending on whether you're using fenders or not. Measuring before purchasing should be pretty important if you have doubts.