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Tyre size, 23mm or 25mm??

  • This topic has 7 replies, 6 voices, and was last updated 11 years ago by Simon E.
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  • June 14, 2015 at 6:49 am #24244
    Lee170

    Hey all,
    I’m relatively new to road cycling, having converted from mountain biking. Now I ride a giant defy 5 at the mo which has 25mm tyres on, I find them comfy and fine, I’m looking to upgrade my current tyres and get some schwalbe ultremo zx, or even some giant pslr. I can only seem to find those in 23 or 28, most online retailers only stock them in 23mm, unless 25mm is so popular there sold out everywhere!
    I use the bike for 20-40 mile rides and the odd commute. I’m gonna upgrade to a 2015 defy advanced 1 or 2 sometime shortly(when it’s back in stock)

    So what are most of you riding tyre size wise?
    Would I Notice a difference if I swap to 23mm?
    What kind of difference?

    Thanks in advance

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Viewing 7 replies - 1 through 7 (of 7 total)
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  • June 14, 2015 at 8:08 pm #850477
    0
    Simon E

    IME not much difference
    IME not much difference between 23 and 25mm. Would opt for 28mm regardless of your weight, you can always replace them if they’re too comfy. 😉

    Ultremo ZX is a lovely tyre to ride, GP4000S and Michelin Pro4 have very similar qualities.

    http://mccraw.co.uk/schwalbe-ultremo-zx-review/

    If you’re 11st I’d not put more than 100 psi in any of them, and even less for the wider versions. Try 90 psi then drop 10 psi and see whether you prefer it.

    June 14, 2015 at 6:14 pm #850475
    0
    tourdelound

    +1 for Schwalbe Ones, 25mm or
    +1 for Schwalbe Ones, 25mm or 28mm, should be able to pick up either online for £27-£28. If you go for 28mm, make sure there’s clearance, although the Defy is an endurance bike so I reckon you should be OK.

    June 14, 2015 at 4:44 pm #850473
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    BBB

    28mm
    Why would you restrict
    28mm

    Why would you restrict yourself to a choice of either 23mm or 25mm ?

    June 14, 2015 at 8:40 am #850471
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    2 Wheeled Idiot

    25mm if they will physically
    25mm if they will physically fit in your frame.

    June 14, 2015 at 7:21 am #850469
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    Lee170

    I’ll take a look at schwalbe
    I’ll take a look at schwalbe ones, I’m 5ft 7in and 11st so small ish rider

    June 14, 2015 at 7:10 am #850465
    0
    CXR94Di2

    Fit 25mm tyres, they are
    Fit 25mm tyres, they are comfier and will roll better. Have you looked at ‘schwalbe one’ tyres. They have good reviews.

    Also if you’re a big rider you will need the extra volume or run 23 mm at very high pressure.

    June 14, 2015 at 7:10 am #850467
    0
    CXR94Di2

    Fit 25mm tyres, they are
    Fit 25mm tyres, they are comfier and will roll better. Have you looked at ‘schwalbe one’ tyres. They have good reviews.

    Also if you’re a big rider you will need the extra volume or run 23 mm at very high pressure.

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