Thanks everyone, but I'm not sure I explained myself properly.

The point I was trying to make is that the Noodle is apparently flared outwards... from what I can gather, it is wider in the hooks and drops, than at the ramps.

(A classic 3t Merckx, for example, has ramps, hooks and drops in the same vertical plane, at 90 degress to the ground.)

A Noodle marked 42c-c (measured by Nitto at the drops) will be narrower at the ramps than a 42c-c classic Merckx, and because I ride mostly on the ramps, would therefore be smaller than I am used to.

I just wondered if anyone knew how much narrower the Noodle is at the ramps than at the drops.

Thank you.