Carbon wheels on Giant Defy Advanced Pro 1
I was in a bike shop looking at this bike when I casually asked if I could put larger tyres than the 25s on these wheels. Despite there being plenty of room around the fork, the salesman said he advised against it. He the proceeded to lean the bike a little and exert some downward pressure and the wheel deflected to the point it was almost touching the fork. Is this normal? Is this even a valid simulation? I wasn't so keen on the carbon wheels, and now I'm even less keen.