Turbo Cotton vs GP5000 TL on Roval CLX64

Discuss light weight issues concerning road bikes & parts.
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Kvnmil13
Posts: 9
Joined: Wed Jul 31, 2019 12:57 pm

by Kvnmil13

I am running a set of Roval CLX64 wheels on my Venge. I currently running a 23mm Cont. GP4000 on the front. From a speed perspective (aero and rolling resistance) which tire would be the fastest for the front?

24mm Turbo Cotton with a latex tube
25mm Continental GP5000 TL
23mm Continental GP4000 II with latex tube (current)

Squashednuts
Posts: 504
Joined: Tue Apr 25, 2017 11:12 am
Location: Christchurch New Zealand

by Squashednuts

You can check out rolling resistance on this site
https://www.bicyclerollingresistance.com/
Fuji SL 5.8kg - viewtopic.php?f=10&t=157704

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by Weenie


Marin
Posts: 3519
Joined: Wed Jan 22, 2014 11:48 am
Location: Vienna Austria

by Marin

How wide are the rims at the brake track, and what's the internal width? You want the tire to be narrower than the brake track for best aero.

welchy
Posts: 276
Joined: Wed Jul 01, 2015 4:04 pm

by welchy

Squashednuts wrote:
Mon Sep 02, 2019 9:29 am
You can check out rolling resistance on this site
https://www.bicyclerollingresistance.com/
This should be your reference for sure.. I use 28MM Turbo Cottons, from a ride persepctive very very good..

cpark
Posts: 27
Joined: Mon Oct 05, 2015 10:01 am

by cpark

Kvnmil13 wrote:
Mon Sep 02, 2019 2:10 am
I am running a set of Roval CLX64 wheels on my Venge. I currently running a 23mm Cont. GP4000 on the front. From a speed perspective (aero and rolling resistance) which tire would be the fastest for the front?

24mm Turbo Cotton with a latex tube
25mm Continental GP5000 TL
23mm Continental GP4000 II with latex tube (current)
For a fastest set up, I would use Turbo Cotton 24mm on the front and 26mm on the rear with latex tube.
For a fast set up with a little more punture resistence, I would run GP 5000 25mm on the front and 28mm on the rear.

refthimos
Posts: 297
Joined: Fri May 25, 2012 6:02 pm

by refthimos

cpark wrote:
Mon Oct 07, 2019 1:22 am

For a fastest set up, I would use Turbo Cotton 24mm on the front and 26mm on the rear with latex tube.
What makes you think the Turbo Cotton is faster than the 5000 TL?
EVO1 | 5.37kg
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spdntrxi
Posts: 3114
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

I'm thinking the 23 GP4000 will end up being the same as a 25 5000TL aero/width wise.. so go with a 25 5000TL.

alanyu
Posts: 97
Joined: Thu Jun 06, 2019 1:10 pm

by alanyu

cpark wrote:
Mon Oct 07, 2019 1:22 am
For a fastest set up, I would use Turbo Cotton 24mm on the front and 26mm on the rear with latex tube.
For a fast set up with a little more punture resistence, I would run GP 5000 25mm on the front and 28mm on the rear.
5000TL is faster than 5000, and 5000 is faster than turbo cotton.
https://www.bicyclerollingresistance.co ... ke-reviews

spdntrxi wrote:
Mon Oct 07, 2019 4:01 am
I'm thinking the 23 GP4000 will end up being the same as a 25 5000TL aero/width wise.. so go with a 25 5000TL.
GP5000 25c is more aero than GP4000 23c though they are at a very similar width on the wheel.
https://www.aero-coach.co.uk/gp-5000-data

Imaking20
Posts: 2027
Joined: Fri Nov 18, 2011 5:19 am

by Imaking20

The question isnt just about crr though. People have gotten so obsessed with BRR results now that they seem to be forgetting how many watts can be given back through a bad tire:rim interface.

BRR is definitely one of your key resources - this series is the other
http://bikeblather.blogspot.com/2015/10 ... 1.html?m=1

Edit: I would definitely not make the claim that a 25mm 5000 is faster than a 23mm 4000 in the wind tunnel based off a test on a single, shallow alloy wheel...


My choice would be the Turbo Cotton or maybe a 5000 with latex. I expect the former to ride and handle a lot better, as well as have the lower cda, the latter will probably have the lowest crr
Current:
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Retired:
Wilier Wonka | The Dentist | The Bucket List | Specialissima | Evo | T2 | Blue | Project C6.0 | Felt AR FRD | Colnago C59 | S-Works Tarmac SL4| S-Works Venge | Wilier Cento1 SL | Tarmac SL2

by Weenie


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