HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 13 posts ] 
Author Message
PostPosted: Mon Jun 10, 2013 7:15 pm 
Offline

Joined: Fri Feb 24, 2012 5:43 am
Posts: 35
Location: San Diego
Hi all,

Does anyone have experience with the 2013 Vittoria lineup which feature the IsoGrip compounds? I'm a crit racer, about 88 kg and was debating between the Open Corsa SR which are a claimed 24mm vs the new Open Corsa CX, in 25mm. Does anyone have actual weights, widths, or opinions of these tires? They'd be used for race day only, as my Veloflex Corsa 23's are toast after 7 months of hard training and racing. I'm essentially looking for a tire with high grip and less weight, with a small sacrifice in puncture resistance. I'm also open to reviews of the Open Corsa SC 25mm.

Thanks!


Top
 Profile  
 
PostPosted: Wed Oct 09, 2013 5:33 pm 
Offline

Joined: Wed Oct 09, 2013 5:17 pm
Posts: 8
Yes I have the SR 24c on the front and the Corsa CX 25c on the back. Both are ISO.

Both tyres weigh near enough the same because the smaller SR is made of a slightly thicker rubber. It is noticeable stiffer when mounting the rim.
The Vittoria website lists the SR as a better full wet tyre than the CX and should in theory last a bit longer.The CX blows up big more like 26mm.

I've got a copy of a French magazine that measures rolling resistance on the Hutchinson rolling road. The best tyre of the 18 in the group test was the Corsa CX 25c. Better than the 23c version and better than the Continental GP4000s in 23 or 25c. (there is a new MkII version of the 4000s not as yet tested)


Top
 Profile  
 
Posted: Wed Oct 09, 2013 5:33 pm 


Top
  
 
PostPosted: Wed Oct 09, 2013 5:44 pm 
Offline

Joined: Tue Jun 07, 2005 3:32 pm
Posts: 475
I always much preferred the slick version, which used to be the KS, and I gather now is the SL.


Top
 Profile  
 
PostPosted: Wed Oct 09, 2013 8:26 pm 
Offline
Moderator
User avatar

Joined: Wed Aug 23, 2006 9:11 pm
Posts: 2806
Location: People's Republic of Boulder
SR tubular has deep treads on the sides that catch and keep a lot of flint and small debris. Very prone to flats. While I like the 24mm width, they are not particularly confidence inspriring in the wet.
I will not buy them again.

_________________
-Deacon Doctor Colorado Slim


Top
 Profile  
 
PostPosted: Wed Oct 09, 2013 9:33 pm 
Offline

Joined: Tue Dec 23, 2008 2:57 pm
Posts: 665
Location: NYC
I have been using OpenCorsa CX in 25c and Open Paves consistently on all my rides over many years, and I just purchased a set of the SRs which I plan on mounting and riding in the next few days...I will post my reflections shortly. As for weight, the SR in 24c weighed in at 225 grams, the exact same weight as the Corsa CX 25c.
EM3

_________________
______________

My 2013 Cervelo R5


Top
 Profile  
 
PostPosted: Tue Sep 02, 2014 8:04 pm 
Offline

Joined: Sat Apr 18, 2009 8:59 am
Posts: 546
Location: Surrey UK
How did the SRs hold up?
I am considering them for english winter as riding veloflex over the summer season and then changing to conti gp4000s is a bit hash. They don't get cuts like veloflex do on the wet full of flint roads, but they are not as supple as the veloflex.

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


Top
 Profile  
 
PostPosted: Tue Sep 02, 2014 8:07 pm 
Offline

Joined: Fri Nov 14, 2008 4:55 am
Posts: 423
Corsa evo sc 25 here tubular and clincher - about as top shelf race tire as it gets in wet and dry.

_________________
Just ride ..


Top
 Profile  
 
PostPosted: Wed Sep 03, 2014 2:29 am 
Offline
User avatar

Joined: Wed Sep 29, 2010 4:25 pm
Posts: 78
Location: MA
Same here. Tubular and clincher Corsa CXs. Great feeling tires. I think I had a bad batch of the tubulars last year as I flatted several times with what appeared to be pretty minor cuts. Current stash (tubular CXs of two bikes) however hasn't been a problem. I did buy a pair of Veloflex Arenbergs, but haven't mounted them yet.

_________________
Ride Strong

https://www.flickr.com/photos/121194764@N07/sets/


Top
 Profile  
 
PostPosted: Wed Sep 03, 2014 8:25 am 
Offline

Joined: Wed Nov 10, 2004 8:20 pm
Posts: 62
Location: Slovakia
1415chris wrote:
How did the SRs hold up?
I am considering them for english winter as riding veloflex over the summer season and then changing to conti gp4000s is a bit hash. They don't get cuts like veloflex do on the wet full of flint roads, but they are not as supple as the veloflex.



Check this thread too viewtopic.php?f=113&t=126239

I'm pretty much confused about them. Great ride feelings but the quality of inner tubes is questionable at least.


Top
 Profile  
 
PostPosted: Mon Sep 08, 2014 9:05 am 
Offline

Joined: Sat Apr 18, 2009 8:59 am
Posts: 546
Location: Surrey UK
Thanks for that. I'm less concern about inner tubes as I'm thinking about open version.
Did anybody have a chance to measure the actual width of open SR and on what rim?

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


Top
 Profile  
 
PostPosted: Mon Sep 08, 2014 4:19 pm 
Offline
User avatar

Joined: Wed Oct 20, 2010 5:56 am
Posts: 291
I've been running Open Corsa CX for several years. Currently on 23 and they measure 23, possibly a hair under 24 (my cm ruler has lines every 2 mm so hard to read but definitely under 24). Mounted on Campy Neutrons. I usually switch to 25s in winter so can't measure those now. I know you want SR 25 but point of reference on CX I guess. I ride a lot of chip seal and they typically last about 1000 miles/1600km. They do get some small cuts but never had any problems flatting any more than Conti 4000GS for example (two flats last year, none so far this year). I've also got a pair of Veloflex I'm waiting to try out when these Vittorias are done. I don't race but when I switched from Conti's to CX a few years ago the difference was noticeable right away.


Top
 Profile  
 
PostPosted: Mon Sep 08, 2014 11:01 pm 
Offline
in the industry

Joined: Sat May 12, 2012 7:25 pm
Posts: 1329
Location: Glermsford, Suffolk U.K
I have started using the open corsa SC 23mm this year. I have them mounted on 25mm wide carbon rims and another set on Pacenti SL23. On these rims they come up around 25mm. The grip even in very wet conditions is excellent, cornering grip is exceed that of the GP4000s which I used to use. Puncture resistance seems good. Only one proper flat with them so far in 1500 miles (there has been a pinch flat and two latex tube failure but none of these are the tyres fault). The rear is cut in a number of places but refuse to puncture which surprises me. I ride on the broken road surface of Suffolk, back lane covered in flint, chip and seal and I hit plenty of unavoidable holes

So ride comfort and grip (in the wet and dry) are all better than the GP4000s and the GP 4 seasons I will use them until I destroy them then I am likely to try the Schwable one tubeless and tubular tyres and if I don't like them back to the corsa SC and open Corsa SC.

_________________
www.thecycleclinic.co.uk


Top
 Profile  
 
PostPosted: Tue Sep 09, 2014 4:34 am 
Offline

Joined: Tue Sep 09, 2014 4:26 am
Posts: 2
bm0p700f wrote:
I have started using the open corsa SC 23mm this year. I have them mounted on 25mm wide carbon rims and another set on Pacenti SL23. On these rims they come up around 25mm. The grip even in very wet conditions is excellent, cornering grip is exceed that of the GP4000s which I used to use. Puncture resistance seems good. Only one proper flat with them so far in 1500 miles (there has been a pinch flat and two latex tube failure but none of these are the tyres fault). The rear is cut in a number of places but refuse to puncture which surprises me. I ride on the broken road surface of Suffolk, back lane covered in flint, chip and seal and I hit plenty of unavoidable holes

So ride comfort and grip (in the wet and dry) are all better than the GP4000s and the GP 4 seasons I will use them until I destroy them then I am likely to try the Schwable one tubeless and tubular tyres and if I don't like them back to the corsa SC and open Corsa SC.


Totally agree. I use the Open Corsa SC on belgium plus rims(25mm wide rims) and only need to inflate them to 80psi. Have not had a flat in 6 months and the grip and ride feel are second to none. Transformed the ride on my alloy bike. Well worth the money.


Top
 Profile  
 
Posted: Tue Sep 09, 2014 4:34 am 


Top
  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ] 


Who is online

Users browsing this forum: nd2rc, Piotrini and 1 guest


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:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Vittoria Open Corsa Evo CX III seating issues

in Road

Horacio

10

968

Sun Apr 27, 2014 4:24 am

kbbpll View the latest post

There are no new unread posts for this topic. Vittoria Corsa SR

in Road

philhul

5

600

Wed May 28, 2014 6:49 pm

philhul View the latest post

There are no new unread posts for this topic. Vittoria Corsa with Bora 35

in Everything wheels

RM27

5

524

Sun Oct 06, 2013 5:30 pm

RM27 View the latest post

There are no new unread posts for this topic. Alternative to Vittoria Corsa Evo CX Tubs

in Road

jrobart

1

395

Sun May 25, 2014 10:03 pm

mjduct View the latest post

There are no new unread posts for this topic. Vittoria Corsa Evo CX II Team Prototype

in Everything wheels

HillRPete

5

453

Tue Mar 11, 2014 11:50 pm

fdegrove View the latest post


It is currently Wed Sep 17, 2014 3:17 pm

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB