25 vs 23 tyres

Road cycling & upcoming rides
Richard
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Postby Richard » 01 Feb 2014, 17:50

Just did the Alpine Classic on Continental 4000s 25 mm tyres instead of the usual 23's

Initial impression was that they were more comfortable for the long haul, cornered better and I couldn't pick any increase, if any, in rolling resistance.

The tyres were fitted to HED Ardennes CL's

After this first outing I am a convert

The bike does look a bit like a cyclocross bike though

Anyone else tried them?

GregPankhurst
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Postby GregPankhurst » 01 Feb 2014, 22:17

Tackled this topic recently in my blog: http://makingcyclingsafer.blogspot.com. ... tyres.html

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Philip
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Postby Philip » 02 Feb 2014, 07:23

I've been searching for a size that will fit my bike, in readiness for Vietnam's roads. Currently tried and failed with Schwalbe marathons 28, ultremo zx 28 and durano plus 25. The durano plus were ok until I rode in the wet then the extra muck on the tyre caused some rubbing. Looks like I have to settle for straight 25's with no extra thickness like the plus's have. As to comfort and handling I love the bigger tyres.

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mikesbytes
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Postby mikesbytes » 02 Feb 2014, 16:54

25mm has lower rolling resistance than 23mm but poorer aerodynamics

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humanbeing
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Postby humanbeing » 02 Feb 2014, 19:05


Richard
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Postby Richard » 03 Feb 2014, 07:40

Mike

You might be right about the slight aero loss but in my case the drag of my svelte physique is more of a penalty

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mikesbytes
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Postby mikesbytes » 03 Feb 2014, 22:11


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Adrian E
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Postby Adrian E » 04 Feb 2014, 07:49

Half the pro peleton are now rollin on 25s (depending to some degree on the course/roads). Remember most deep carbon rims are near 28mm in the middle so the transition from tyre to rim is more aero than you'd expect. The main disadvantage of 25s is actually weight weight gain.


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