• There's no set rule to tell how much you'll be able to fit. Mount the rims, get a Vernier and check the clearance where the tire would be, that would give you an idea.
    You may end with fairly smaller wheels than the 700c equivalent, make sure the bottom bracket doesn't end too close to the tarmac

  • I haven't received the wheels yet, but measuring 320mm from the axle the there is 48mm rear and 51mm front clearance.. would 2" tyres fit? or maybe need something a bit smaller?

  • maybe need something a bit smaller?

    Definitely need something smaller. The official minimum clearance is 4mm all round (EN14781, 4.10.2), which suggests 40mm true width is where you should be aiming.

  • Surely not, 2" is about 50mm and you need a bit of clearance.

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