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23 or 25mm Clinchers to race and train? Which clinchers to choose?

  • This topic has 35 replies, 23 voices, and was last updated 10 years ago by Laddie-147.
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  • July 22, 2013 at 6:53 am #19420
    MattFr

    I know I’m going to get all sort of responses, but I’m currently thinking of going to 25mm tyres after a number of people have told me the advantages of the lower rolling resistance. What I’m wondering is would you use them for both racing and training? And I guess does rider weight (64kg) make a difference to tyre choice?
    Also what would be the clincher of choice? In an ideal world I’d opt for an open tubular type for best, and a cheaper training tyre, but I’m not sure this is an option at the moment.

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  • May 21, 2016 at 2:40 pm #749081
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    Laddie-147

    Probably all in the mind but

    Probably all in the mind but tyres are the same. Gave up with latex tubes fed up puncturing, could have been just a bad run but got fed up forking out out for new tubes

    May 19, 2016 at 9:14 pm #749079
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    fukawitribe
    Laddie-147 wrote:
    I swapped my 23mm schwalbe ones last summer for 25’s, definately more comfortable on the 25’s. However, I couldn’t get used to how sluggish they felt on pick up and on climbs, sure they do have lower rolling resistance when up to speed, but I hated the sluggishness compared to 23’s, have now swapped back and enjoy the responsiveness of 23’s

    You know how your tyres feel I guess but sure there’s not something different (exact model etc) apart from the width ? There’s 20g between the two of them which is not much to make such a large difference. BTW, running latex inner tubes ?

    May 19, 2016 at 7:34 pm #749077
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    Laddie-147

    I swapped my 23mm schwalbe

    I swapped my 23mm schwalbe ones last summer for 25’s, definately more comfortable on the 25’s. However, I couldn’t get used to how sluggish they felt on pick up and on climbs, sure they do have lower rolling resistance when up to speed, but I hated the sluggishness compared to 23’s, have now swapped back and enjoy the responsiveness of 23’s

    May 17, 2016 at 10:43 am #749075
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    fenix

    levermonkey wrote:

    levermonkey wrote:
    Trust me they will take higher pressures. I’m a lot heavier than 64kg and have managed to compress a race tyre to the rim hitting a bump. Also my road bike is not my everyday, it’s a weekend and sportive special. 140psi is an absolute maximum on dry, smooth roads – as you can guess you don’t find them in UK. UK roads max 130psi for 23C, 100-110psi for 25C.

     

    Sorry just found this – you might want to check that your rims are rated for 140 PSI. Thats a huge pressure. 

     

    February 15, 2014 at 11:21 pm #749073
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    movingtarget

    If I were ever to do the type
    If I were ever to do the type of riding where I could appreciate the benefits of aero carbon wheels it would be nice. They are sooo aesthetically appealing.

    I found the last bit of the article the interesting though. I’ve heard so many different people and reviewers say that wider rims and wider tires = lower air pressure. So with a 23 mm rim, your 23 mm tire actually balloons out to 25 or even 27 mm but then instead of 100 psi or whatever you normally run at (yes, yes, long-standing debate) they drop down to 70 or 80 psi which makes for a cushier ride but takes away some of the rolling resistance benefit from the wider tire-road interface which no one really mentions.

    Now if I could just get all the science to convince the spouse to let me upgrade my wheelset ….

    February 15, 2014 at 9:09 am #749071
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    Nick T

    Comparisons of pro’s riding
    Comparisons of pro’s riding tubular 23s and 25s are hard to quantify when looking at clinchers – a tubular 23 is a tubular 23, it gets glued on, inflated and that’s that. When you look at a clincher, things like air volume, tyre width etc become dependant on your rim width, base tape thickness, double layered base tape, tyre bed profile etc. so one persons experience on a 25 clincher might be very different to another’s.

    Just get the ones you want to try, and try them. If you like them, buy more.

    February 14, 2014 at 11:23 pm #749069
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    700c

    Interesting link.
    The pro’s
    Interesting link.

    The pro’s might be on 25’s, but then they’ve got the latest super wide rims which are designed to work with wide tyres (ie no bulge over the rim, preserving the aerodynamic advantage of deep section wheels)

    I can’t afford to update my summer ‘aero’ tubulars, which are the traditional narrow v shape, so I stick with narrower tyres as per the manufacturer recommendations.

    Possibly it wouldn’t make much difference anyway, but then that would defeat the object of buying deep, light carbon wheels in the first place..!

    February 14, 2014 at 8:13 pm #749067
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    movingtarget

    Sorry for resurrecting this
    Sorry for resurrecting this thread again but just read an article on 23 vs 25 based on the pro’s perspective that people might find interesting. And there’s some tire pressure thrown in there at the end just for some spice.

    http://www.competitivecyclist.com/learn/25-vs-23?cmp_id=EM_CC_1067218_S1&mv_pc=r105

    Would be interested to find out what the OP ended going with.

    February 7, 2014 at 7:39 am #749065
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    Low Speed Wobble

    All this talk of 10psi here
    All this talk of 10psi here or there. I have two track-pumps. A Bontrager and an SKS. They give different readings, by just over 10psi. I’d say any pressure quoted here should be taken as a guide only, they go out a bit harder, then a bit softer and see what feels right. You’ll know when it’s right. And your bum will thank you.

    February 6, 2014 at 6:41 pm #749063
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    Anonymous

    Trust me they will take
    Trust me they will take higher pressures. I’m a lot heavier than 64kg and have managed to compress a race tyre to the rim hitting a bump. Also my road bike is not my everyday, it’s a weekend and sportive special. 140psi is an absolute maximum on dry, smooth roads – as you can guess you don’t find them in UK. UK roads max 130psi for 23C, 100-110psi for 25C.

    February 6, 2014 at 8:53 am #749061
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    fukawitribe

    levermonkey wrote:Sorry. I

    levermonkey wrote:
    Sorry. I didn’t make that clear.

    Reduce pressure by 25psi OR 30psi depending on conditions. Even reduced by 30psi I’ve still got 140psi in the tyre.

    In my defence I was a bit rushed and didn’t proof read before submitting.

    Blimey, you might want to look at those pressures – apart from a lack of comfort, they are way over the max pressures for the tyres. GP4000 is listed as 125PSI max and the GP4000s 120 PSI, unless i’m reading that wrong.

    If you’re using them on the boards then I could understand the high pressure a little more, but then again you wouldn’t be using 25mm GP4000’s there. Can I ask what sort of riding you do that makes it worth the risk and ride quality ?

    February 6, 2014 at 7:42 am #749059
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    KiwiMike

    levermonkey wrote:
    Reduce

    levermonkey wrote:

    Reduce pressure by 25psi OR 30psi depending on conditions. Even reduced by 30psi I’ve still got 140psi in the tyre.

    According to the science http://janheine.wordpress.com/2010/10/18/science-and-bicycles-1-tires-and-pressure/ you must weight around 130kg đŸ˜‰

    February 6, 2014 at 6:46 am #749057
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    Anonymous

    Sorry. I didn’t make that
    Sorry. I didn’t make that clear.

    Reduce pressure by 25psi OR 30psi depending on conditions. Even reduced by 30psi I’ve still got 140psi in the tyre.

    In my defence I was a bit rushed and didn’t proof read before submitting.

    February 4, 2014 at 4:20 pm #749055
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    KiwiMike

    levermonkey wrote:Tyre

    levermonkey wrote:
    Tyre pressure. Since changing to Continental GP4000 25C have reduced tyre pressure by 25 to 30psi depending on conditions.

    ***30***? you sure?

    maybe on a 52c, but a 25?

    February 4, 2014 at 3:54 pm #749053
    0
    Anonymous

    Tyre pressure. Since changing
    Tyre pressure. Since changing to Continental GP4000 25C have reduced tyre pressure by 25 to 30psi depending on conditions.

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