35mm and 37mm

skinnydog
skinnydog Posts: 52
in Cyclocross

I’ve ended up being in possession of 2 new tyres cx/gravel tyres - mostly for compact/dry conditions. One is a 37mm and one a 35mm. Any advice which size for the front and which the rear?

Comments

  • First.Aspect
    First.Aspect Posts: 17,396

    Smaller one on the front, because there's normally more weight on the back wheel.

  • skinnydog
    skinnydog Posts: 52

    Thanks, thought as much. But relatively late to the gravel party and wanted to check. Thanks for replying.

  • daniel_b
    daniel_b Posts: 12,041
    https://forum.bikeradar.com/discussion/comment/21109371#Comment_21109371

    Agreed - the only reason I can see for putting a larger tyre on the front would be on a more old school roadie, where clearance at the back is uber tight, but there is more space up front - then you benefit from a bit more comfort I guess.

    Felt F70 05 (Turbo)
    Marin Palisades Trail 91 and 06
    Scott CR1 SL 12
    Cannondale Synapse Adventure 15 & 16 Di2
    Scott Foil 18
  • oxoman
    oxoman Posts: 504

    If your using a gravel bike for off road touring then big tyre on the back. If getting rowdy on gravel then big on front with lower pressure for comfort and grip. Unless lucky enough to have suspension. Personally I run 45s front and back.

    Too many bikes according to Mrs O.
  • First.Aspect
    First.Aspect Posts: 17,396

    Handling will be weird with a larger front tyre than rear one. I think.

  • oxoman
    oxoman Posts: 504

    Gives better grip into berms and more comfort when riding hard. I run my mtb the same.

    Too many bikes according to Mrs O.
  • First.Aspect
    First.Aspect Posts: 17,396

    I dunno, only tried it on the road. I have never found a need to use the term "berm".

  • monkimark
    monkimark Posts: 1,952

    On my mtb I have a slightly bigger and grippier front tyre because it does most of the braking and steering,I figure that if I'm going to loose traction, I'd rather it was the back wheel that slid out.

    Road and cx bikes have the same front and rear for the simple reason that I usually buy tyres in pairs.

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