GT Grade Alloy Tire Clearance

Anyone with a GT Grade Alloy able to comment on tire clearance? I can't find one locally to look at and the one I have on order won't be in until June. I know stated clearance is 35 but I really want to be able to run 40, or at least 40 front and 35 rear. Thanks!

I just measured mine
Rear chain stay 46.3mm
Fork 44.9mm
I have Clement USH 700x35 on stock rims and they measure 34.33mm
I just can't say if there is enough clearance for a 40. 

Henry thanks for that info. I really appreciate it. I guess I'm a bit confused though. With 45 or so cm available, how would an accurately sized 40c tire not fit?

2.5mm is pretty tight clearance.  My preference might be for a bit more than that, especially in an off road environment with debris, mud, etc ..... 
I would run a road bike with that clearance with little second thought.

henrypretz wrote:2.5mm is pretty tight clearance.  My preference might be for a bit more than that, especially in an off road environment with debris, mud, etc ..... 
I would run a road bike with that clearance with little second thought.

\n \nGood point. For muddy conditions it would not be good but for dry I'd hope I could get away with it. Thanks so much for the measurements. I still have 2.5 months until the bike gets here in order to make my mind up!