Originally Posted by
akexpress
+1^^^
Our whisky fork does not allow anything larger then a 28mm tire and the Continental 4000S ll 28mm's don't really fit with out rubbing the bottom of the fork with road debris on Zipp 404 rims.
Over the last year or so in this Forum we have been noting that tire & rim profile combinations result in varied outcomes. Continental and Compass tires seem to stretch more than some other tires like Schwalbe for example. The Schwable Ultremos I've measured, pretty much maintain their original widths, whereas Conti 4000 and 4Seasons have stretched up to 3mm wider over a week or so from when mounted new. Stretching isn't a bad thing, it just needs to be considered in tight clearance situations.
Zipp 404 is actually pretty narrow inside, something which will jack up the tire height. Using this profile image below, you can see the first Zipp profile is 24.73mm on the outside but only 16.25mm on the inside. The rim well depth is also fairly shallow which reduces air volume and requires a higher psi to maintain sufficient cushion under load.
Maybe try a rim with a wider internal profile to see if that sucks down the tire height?