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Ready
Joined: 06 Jan 2015 Posts: 12
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Posted: Mon May 04, 2015 7:46 am Post subject: New tyres for road bike. |
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Hi all
I need a new set of tyres for my road bike but cannot decide what to get can anyone recomend some?
George
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Nobbie
Joined: 24 Jul 2006 Posts: 4397 Location: Wilmslow
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Posted: Mon May 04, 2015 7:52 am Post subject: |
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GP4000s
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largeade
Joined: 10 Feb 2010 Posts: 2159 Location: NE Hampshire
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Posted: Mon May 04, 2015 7:52 am Post subject: |
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ditto
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SuperSonic
Joined: 16 Jun 2011 Posts: 841 Location: Oxfordshire
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Posted: Mon May 04, 2015 8:58 am Post subject: |
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Ditto - 25mm
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Ready
Joined: 06 Jan 2015 Posts: 12
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Posted: Mon May 04, 2015 12:53 pm Post subject: |
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Cheers all
I was looking at these.
One other question is it worth running 23 on the front and 25 on rear I have 23 on both at moment?
George
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Nobbie
Joined: 24 Jul 2006 Posts: 4397 Location: Wilmslow
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Posted: Mon May 04, 2015 1:13 pm Post subject: |
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Yes
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SuperSonic
Joined: 16 Jun 2011 Posts: 841 Location: Oxfordshire
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Posted: Tue May 05, 2015 12:37 am Post subject: |
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I run 25 on both front and rear.
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Whisk
Joined: 09 Jun 2005 Posts: 8698 Location: London
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Posted: Tue May 05, 2015 8:48 am Post subject: |
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The guys from Conti reckon that the 25 is a quicker tyre than the 23 - it's got a lower rolling resistance and more grip through the corners.
The rolling resistance on a 28 would be lower still, but the added weight starts to offset the benefits and you start to get frame clearance issues with some frames.
_________________ 2019: Just riding my bike....
Hot Chillee ride captain (sponsored by Specialized, Sigma Sports, Kalas, Wahoo, One Pro Cycle Insurance)
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Ready
Joined: 06 Jan 2015 Posts: 12
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Posted: Tue May 05, 2015 1:33 pm Post subject: |
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Interesting thanks everyone for the comments.
I'm not sure what size to get
23 on both but sound like they would be slightly slower.
23 front 25 rear
25 on both
Some research tonigh me thinks.
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Lanterne_Rouge
Joined: 21 May 2012 Posts: 812
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Posted: Tue May 05, 2015 5:01 pm Post subject: |
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Whisk wrote: | The guys from Conti reckon that the 25 is a quicker tyre than the 23 - it's got a lower rolling resistance and more grip through the corners.
The rolling resistance on a 28 would be lower still, but the added weight starts to offset the benefits and you start to get frame clearance issues with some frames. |
I was running 25's and loved the ride. The only downside I found was that when running SRAM Force calipers I had to let the tyre down to remove or insert the wheel. I found the clearance the SRAM Caliper gave with the release fully open wasn't enough to get the wheel to pop out fully inflated. I've gone back to 23s to get around this issue.
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SuperSonic
Joined: 16 Jun 2011 Posts: 841 Location: Oxfordshire
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Posted: Tue May 05, 2015 6:44 pm Post subject: |
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Lanterne_Rouge wrote: |
I was running 25's and loved the ride. The only downside I found was that when running SRAM Force calipers I had to let the tyre down to remove or insert the wheel. I found the clearance the SRAM Caliper gave with the release fully open wasn't enough to get the wheel to pop out fully inflated. I've gone back to 23s to get around this issue. |
I have to do the same with my ultegra calipers too - but it's not a big issue. If I was planning to take the wheel off then I'd have a pump to hand, and if I wasn't planning to take the wheel off then it's flat anyway...
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the_exile
Joined: 15 Aug 2013 Posts: 862 Location: The flat lands out East
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Posted: Tue May 05, 2015 9:33 pm Post subject: |
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Is the advantage of the 25mm that they offer more comfort? Or is there more to it than that?
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SuperSonic
Joined: 16 Jun 2011 Posts: 841 Location: Oxfordshire
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Posted: Tue May 05, 2015 9:47 pm Post subject: |
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As Whisk wrote earlier - wider tyres generally have a lower rolling resistance, but you get the added comfort as well.
The increase in width does in theory make you less aero - but I work on the basis that a reduced rolling resistance helps at all speeds whereas to notice the aero difference of a 2mm wider tyre - you'd probably need to be going faster than I ride.
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Andy916
Joined: 08 Oct 2011 Posts: 700 Location: Cambridge
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Posted: Wed May 06, 2015 9:45 am Post subject: |
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If Conti could make tyres the actual width they're supposed to be then I'd take their speed claims a bit more seriously! (plus the aforementioned aero trade-off, which will depend on matching to rim width too)
GP4000S is the safe bet and it's the front width that's going to figure in aerodynamics. Attack/Force combo has basically the same construction but is nominally 22mm front, 24mm rear. My current Attack front measures 23mm, whilst a previous one measured 21-22mm. They work fine on my TT bike, and I use 4000S 23mm elsewhere. Might try 25mm 4000S on rear for the sketchy roads of Wasdale X, as I'm finding my aero-road bike a bit harsh (Giant Propel, compared to an older TCR Alliance, and indeed compared to my Cervelo P2C).
You could try other 200g race tyres but my experience of various Ultremos, for example, is that they're not as robust as the Contis.
_________________ 2016: Triathlon X Windemere, Monster Ely half, Evergreen 228 Chamonix
2015: Wasdale X, IM Wales, Rimini half, Ely half, Strathpuffer 24hr
Previous: IM Lanza, IM UK, Forestman, Outlaw, Mallorca half, XTERRA, IoM e2e, Dart 10k, 3PYR
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Jorgan
Joined: 12 Nov 2007 Posts: 17979 Location: alles was ich bin, alles was ich war
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Posted: Wed May 06, 2015 10:20 am Post subject: |
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I'm a bit of a Conti fanboy too, but for the sake of variety, you may also want to consider the new S Works Turbo (24mm) or the Vittoria Open Corsa Evo; the Vittoria is a really fast & supple tyre, but not as hard wearing as a the Conti as an everyday tyre.
If you want something that will last forever but with a Crr trade-off, buy Tufo (I use Tufos as spare tubulars, as they roll-up very small).
_________________ 27 Years since it all began....
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