New tyres for road bike.

Ready · Joined: 06 Jan 2015 Posts: 12

Hi all

I need a new set of tyres for my road bike but cannot decide what to get can anyone recomend some?

George

Nobbie · Joined: 24 Jul 2006 Posts: 4397 Location: Wilmslow

GP4000s

largeade · Joined: 10 Feb 2010 Posts: 2159 Location: NE Hampshire

ditto

SuperSonic · Joined: 16 Jun 2011 Posts: 841 Location: Oxfordshire

Ditto - 25mm

Ready · Joined: 06 Jan 2015 Posts: 12

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

Nobbie · Joined: 24 Jul 2006 Posts: 4397 Location: Wilmslow

Yes

SuperSonic · Joined: 16 Jun 2011 Posts: 841 Location: Oxfordshire

I run 25 on both front and rear.

Whisk · Joined: 09 Jun 2005 Posts: 8698 Location: London

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.
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Ready · Joined: 06 Jan 2015 Posts: 12

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.

Lanterne_Rouge · Joined: 21 May 2012 Posts: 812

SuperSonic · Joined: 16 Jun 2011 Posts: 841 Location: Oxfordshire

the_exile · Posted: Tue May 05, 2015 9:33 pm Post subject:

Is the advantage of the 25mm that they offer more comfort? Or is there more to it than that?

SuperSonic · Joined: 16 Jun 2011 Posts: 841 Location: Oxfordshire

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.

Andy916 · Joined: 08 Oct 2011 Posts: 700 Location: Cambridge

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.
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Jorgan · Posted: Wed May 06, 2015 10:20 am Post subject:

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 Very Happy

(I use Tufos as spare tubulars, as they roll-up very small).
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