Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About Impressum
It is currently Sat Nov 18, 2017 10:52 pm

All times are UTC+01:00




Post new topic  Reply to topic  [ 53 posts ]  Go to page 1 2 3 4 Next
Author Message
PostPosted: Fri Jul 14, 2017 8:36 am 
Offline

Joined: Tue May 23, 2017 8:53 am
Posts: 79
Sadly I can't continue my support for the GP4000s, with a recent spate of out-of-round 25mm tyres, which came from different stores. Checked on different rims, and double checked seating, still there. The online store actually replied with my warranty claim with new ones, and no query at all. Seems like they knew about it.

The old ones used to have a self-destructive sidewall, which feathered and you got strings off the wall, or just plain failed.

They roll nice, but for some reason I have found they end up out of round over a short time, even on first fitment. Thump, thump, thump, very annoying. Fulcrum, Campagnolo, DT Swiss and H Plus Son rims, same issue each time.

Has anyone else had any roundness issues with the GP4000S II in 25mm? List your experiences here so I know it's not just in my head!!!!

Also post if you have had the same dramas or others in 23 or 28mm.

Edit: out of round meaning a slight bulge at one point of the tyre. Very noticeable on the front, when you're rolling.

_________________
BandiCoote

Eddy Merckx Eddy70 limited edition.
Trek Émonda 2018 SLR


Top
   
PostPosted: Fri Jul 14, 2017 10:34 am 
Offline

Joined: Sat Apr 18, 2009 8:59 am
Posts: 1002
Location: Surrey UK
Ditch them and pick other tyres.
GP4S are not brilliant in any tyre performance characteristic. They are not bad, but so many other interesting options out there to choose from.

_________________
Cervelo S5
Cervelo R5 VWD 5637g/12.43lb
Pronghorn XC SW Race 8284g/18.26lb


Top
   
Posted: Fri Jul 14, 2017 10:34 am 


Top
   
 
PostPosted: Fri Jul 14, 2017 11:39 am 
Offline

Joined: Wed Jan 22, 2014 11:48 am
Posts: 2423
Location: Vienna Austria
Agreed, there's tons of great tires out there, just switch.


Top
   
PostPosted: Fri Jul 14, 2017 11:42 am 
Offline
Moderator

Joined: Sat Apr 22, 2006 12:38 am
Posts: 2034
Location: Dutchess County, NY
Had sidewall issues with 23's. I gave up on them. Switched to kenda kalientes which I found on ebay for 20-25 usd each (and they've been bombproof and lighter and easier to mount). I'm now trying the kenda valkyrie tire which comes in a 192g for a 25 mm width.

_________________
Speedplay is the devil!


Top
   
PostPosted: Fri Jul 14, 2017 11:46 am 
Offline

Joined: Tue May 23, 2017 8:53 am
Posts: 79
I have already- Vittoria Rubino PRO SPEED, seem to be way faster, feel nicer on the road too, on the Domane P1. AUD$33 each on Wiggle. A set of Veloflex Masters live on the EDDY70 but may get replaced with a set of Vittoria Corsa G+ gumwalls when they're done to try them out, otherwise I'm going to run the Rubino SPEED as my regular ride tyres to see how they go.

Life is too short for shit tyres. :D

Keep 'em coming.

_________________
BandiCoote

Eddy Merckx Eddy70 limited edition.
Trek Émonda 2018 SLR


Top
   
PostPosted: Fri Jul 14, 2017 12:56 pm 
Offline
User avatar

Joined: Tue Feb 05, 2013 2:46 pm
Posts: 306
ClydesdaleChris wrote:
I have already- Vittoria Rubino PRO SPEED, seem to be way faster, feel nicer on the road too, on the Domane P1. AUD$33 each on Wiggle. A set of Veloflex Masters live on the EDDY70 but may get replaced with a set of Vittoria Corsa G+ gumwalls when they're done to try them out, otherwise I'm going to run the Rubino SPEED as my regular ride tyres to see how they go.

Life is too short for shit tyres. :D

Keep 'em coming.


From Rolling Resistance Review:

"Conclusion

Vittoria Rubino Pro Speed road bike tire on a rolling resistance test machine
The Vittoria Rubino Pro Speed offers a low weight and a low rolling resistance at the higher end of the air pressure range. The low rolling resistance comes at the cost of a very low puncture resistance and only a thin layer of rubber. I can't imagine a situation where I would prefer this tire over a Conti GP4000S II or Schwalbe One which offer close to the same rolling resistance but offer a much higher puncture resistance."


Top
   
PostPosted: Fri Jul 14, 2017 1:09 pm 
Offline

Joined: Wed Jan 27, 2016 1:39 pm
Posts: 672
I went through 3 sets of GP4000s II's in one season... consistently falling apart in the sidewalls, well before the tread was anywhere near worn. Fortunately, I caught all of those before I took them out and had rides on them. Unfortunately, some of my teammates weren't so lucky and 3 of them had catastrophic blow outs on the road due to sidewall failures. I switched to S-Works turbo tires and ran them for 2 seasons with much better luck. They're faster and lasted much longer than I ever got a set of GP's to last. This year, I've been running Vittoria Corsa G+ and they've performed great as well.

_________________
2016 Pactimo Brand Ambassador
http://www.Crankaddicts.cc
http://www.skratchlabs.com
2015 Specialized S-Works Allez
2015 Specialized Venge Pro


Top
   
PostPosted: Fri Jul 14, 2017 1:20 pm 
Offline

Joined: Tue May 23, 2006 9:39 pm
Posts: 1055
i have inconsistent sidewall issues with GP4000II. always changing them before wearing out to the 'wear indicators'. been using Schwable Pro One lately and wore one set down to the fabric belts. probably don't get as much mileage out of a set, but much more than GPs which i have to change prematurely. i would like to try the Panaracers next.

_________________
- AX Lightness Vial EVO D + DA9070 + Enve SES 3.4 carbon hubs
- Parlee Altum + DA9150 + Enve SES 4.5 carbon hubs
- Parlee ESX + DA9070 + THM SRM PM + Enve SES 6.7 CK hubs
- Independent Fabrication Ti FLW + Campy SR11 + Enve 3.4 CK hubs


Top
   
PostPosted: Fri Jul 14, 2017 1:38 pm 
Offline

Joined: Thu Feb 09, 2017 7:47 am
Posts: 27
I had the feathering issue on a pair of 4000S several years ago. Since then I have gone through 2 pairs with no issue, save for an unfortunate sidewall cut


Top
   
PostPosted: Fri Jul 14, 2017 2:18 pm 
Offline

Joined: Thu Nov 20, 2014 8:49 pm
Posts: 68
I had two side-wall blow-outs on 25mm GP4000's last year. Both had less than 100kms on them and both were replaced under warranty by the retailers. I haven't had any issues since but I think I'm going back to Michelin Pro4's once these are done as I was using Michelins for the previous 3 or 4 years with zero issues and more importantly only 1 puncture in that time.


Top
   
PostPosted: Fri Jul 14, 2017 2:29 pm 
Offline

Joined: Fri Dec 15, 2006 7:45 pm
Posts: 4423
Location: Natovi Landing
No issues here ... have had some in the squad since launch of the black chilli variant, and before come to think of it (though those were genuine slow cr@p)

They remain IMO the best balance of speed, longevity and grip, if not the best at anything

_________________
----------------------------------------
Stiff, Light, Aero - Pick Three!! :thumbup:


Top
   
PostPosted: Fri Jul 14, 2017 9:01 pm 
Offline

Joined: Wed Jan 22, 2014 11:48 am
Posts: 2423
Location: Vienna Austria
The reason to ditch gp4000s is not the sidewall but the extremely harsh ride!


Top
   
PostPosted: Fri Jul 14, 2017 9:20 pm 
Offline
User avatar

Joined: Tue Jul 26, 2016 8:43 pm
Posts: 200
Location: Los Angeles, California
Marin wrote:
The reason to ditch gp4000s is not the sidewall but the extremely harsh ride!


Agree with the harsh ride issue. I dunno...maybe the stiffish sidewalls improve rolling resistance measurements. I'm not interested in running below 90psi just to compensate.

My GP's always ran true. Cool-looking tires. And pretty easy to mount on tubeless-compatible rims. Suffered zero punctures over a couple thousand miles, but unfortunate enough on two occasions to hit small stuff on the road to cause huge slits in the sidewall, which seems very brittle to me. Probably just bad luck, but costly bad luck at that.

_________________
Oldbie


Top
   
PostPosted: Fri Jul 14, 2017 9:29 pm 
Offline

Joined: Thu Dec 11, 2014 9:55 pm
Posts: 87
Best tires I've used. Doubt I'll ever buy another Vittoria. Open Corsa CX's were too fragile and fit too loose on the rims. Sorry you are having problems with out of roundness. Hope I don't.


Sent from my iPhone using Tapatalk Pro


Top
   
PostPosted: Fri Jul 14, 2017 11:13 pm 
Offline

Joined: Tue May 23, 2006 9:39 pm
Posts: 1055
i find it amazing to see all the different experiences with the GP4000IIs. the ride does get harsh after a thousand miles on them...i can agree on that. but when i first put them on, they feel pretty nice.

_________________
- AX Lightness Vial EVO D + DA9070 + Enve SES 3.4 carbon hubs
- Parlee Altum + DA9150 + Enve SES 4.5 carbon hubs
- Parlee ESX + DA9070 + THM SRM PM + Enve SES 6.7 CK hubs
- Independent Fabrication Ti FLW + Campy SR11 + Enve 3.4 CK hubs


Top
   
Posted: Fri Jul 14, 2017 11:13 pm 


Top
   
 
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 53 posts ]  Go to page 1 2 3 4 Next

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Continental GP4000s II still the go to tyre

[ Go to page: 1 2 3 4 ]

in Everything wheels

Alumen

50

5285

Mon Jun 05, 2017 7:52 pm

Asteroid View the latest post

There are no new unread posts for this topic. GP4000S II 28mm thoughts/ reviews?

in Everything wheels

ClydesdaleChris

9

1017

Fri Oct 13, 2017 9:29 pm

mpulsiv View the latest post

There are no new unread posts for this topic. gp4000s 28mm on 21mm internal widht rims + 70kg rider ==> tyre pressure?

in Everything wheels

Delorre

10

1006

Wed Mar 29, 2017 8:49 pm

Delorre View the latest post

There are no new unread posts for this topic. deleted, post count to low. please read this post

in For sale - Pictures are mandatory 22-3-13

torinb

0

308

Tue Sep 05, 2017 9:19 pm

torinb View the latest post

There are no new unread posts for this topic. post deleted, post count.

in For sale - Pictures are mandatory 22-3-13

izza

0

236

Sun Oct 22, 2017 7:45 pm

izza View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited