• So the verdict; not a hope in hell of these tyres fitting!
    Looking at the pic of the 25 it does look like there’s a reasonable amount of clearance. This is with a year of stretch and about 4000 miles of wear.
    The 28 however, on my wheels anyway, is absolutely MASSIVE.
    The width got bigger but still with about 1mm clearance at the fork but the height!! The height grew so much that the wheel wouldn’t even fully locate in the dropouts without the tyre hitting the caliper.
    Fair to say that there’s no way this will work whatever caliper I use.
    Thanks for all the help. The 28 hasn’t gone to waste as it fits the rear just fine.
    Actual width is about 31mm.

  • Yeah that's tight! For reference a Shimano wouldn't work on my setup but a Sram did. Terrible pic but below shows a 30c g-one on Kinlin rim, there's probably 2-3mm clearance all round on a shortish A-C length fork. Essentially the inside of the caliper runs flush with the inner surfaces of the fork so if the wheel will spin without a caliper it should/might work with a Rival caliper.

    I'd stick with the 25c and DA caliper.

  • You could put something in the dropout to give you 2mm more of crown clearance. Of course this could be terrible advice, but may work if done right (and the dropout have enough room to do it safely)

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