Originally Posted by chas58

The problem with running such tight clearance is that if the tire goes just 1mm out of true, you are going to have problems with the tire rubbing. There is just no room for anything to be other than perfectly true (as you can start to see in your pictures).

Gatorskins seem to me to be a little bit smaller than advertized. The simple solution is to just get the 25mm gatorskin – problem solved. (getting another brand tire that is closer to size to a 25mm isn’t a better solution, just a different way to do the same thing).

The more complex options are to get different front fork, or to take a dremmel to your front fork to give yourself some more clearance (something I have done in the past).

Good luck!