I'm trying to put some larger tyres on a Dolan Precursa with Alpina forks. Apparently people are successfully riding around on 28mm tyres.
I've got 25mm tyres on the wheel at the moment and there's plenty of clearance.
But when I put the brakes callipers on instead of sitting against the forks like:
it sits like this:
forcing the brakes to lean onto the tyre:
I've tried 3 different sets of callipers 2 of which say they clear 28mm. It feels like maybe the brake hole in the fork isn't as flush as it should be.
Has anyone got a cunning solution? can i file the top of the brake hole to level it off? is that a terrible idea?