Classic & Vintage - Grand Bois Hetres- real world dimensions?

Hi there. I'm toying with turning one of my old tourers into a 650b, and the fit may be close depending on the tires I choose. Anyone have Grand Bois Hetres in use? I'm wondering what the actual measurements are when pumped to appropriate psi- both width and the overall diameter it creates on the wheel. If anyone can fill me in, that would be great. Thanks!

There have been several production runs of the Hetre, with stated widths being either 41 or 42mm, depending on the lot. I think the newer ones are labeled as 42mm, and the ones I purchased this winter are labeled 42mm. They measure 41.0mm wide on Velocity Synergy rims. That's after about 200 miles of use and with a psi of about 35-40lb. I don't know the height measurement from rim to tip of tread-- that would be harder to measure.

Always a good idea to measure and make sure you have PLENTY of extra clearance (ya never know when you'll want to add fenders)
here is a good list of measurements to keep in mind
http://650b.webs.com/conversions.htm

Also, there is a 650B listserv at GoogleGroups
lots of very helpful folks there

Thanks for the quick response, southpawboston! You're right, "height" was not the best way to approach what I really need to know, which is the overall diameter with those tires (close to 700c?). I've edited my original post.

"Also, there is a 650B listserv at GoogleGroups
lots of very helpful folks there"

I didn't know about that one- thanks!

I asked this same question not long ago and was told they measure around 43mm wide on 18mm rims.