fogman wrote:From the Campagnolo Bora Tubular User's Manual:
"• Check to insure that the diameter and cross-section of the tubular tire you plan to use are compatible with the dimension of the rim."
There is no mention of what specific (minimum/maximum) tire sizes are compatible with these rims.
Ok @Fogman, I know you and a few others have been obsessing over the new Boras. I can't even remember which one is which anymore. But I think one of your main concerns is whether a 25mm tubular on the new rim width will fit in a Dogma, correct? Well, yesterday I had a Dogma at my house and just for you I thought I'd throw my new Bora Ultra 35's in it with the 25mm Arrenbergs mounted. Here's how they looked:
So... not a ton of clearance, but totally fine if you're running tubulars. Also, keep in mind that there's no brakes on here. Some brakes reduce that clearance that you see. Of the current brakes out there, I think the new Shimano brakes offer the best clearance and design of any of them, including Campy .
Also, none of the above clearances apply if you're talking about the clincher versions. I would bet a 25mm clincher version on the new rims will sit higher than than the tubulars and probably have less clearance. On the other hand, running a 23mm clincher on the wider rims may be just fine, at least much better than running the 23mm clincher on a narrow rim.
And in reference to your post about the wording in Campy's manual about checking to see that the tire and rim are compatible, I suppose they are expecting you to be able to determine that from looking at how the interface is between whatever tire you are working with. You should be fine running 23mm-25mm tubulars on this rim without even thinking about it. Don't think I'd run smaller than that, and I have decided that 25mm is the largest I would want in a road tire and I'm a bigger guy at 200lbs/90kg. That's not to say you couldn't run a bit larger tire that 25mm on these rims if you desired to, but for me personally, that won't be happening.