Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

2 Pages V  1 2 >  
 Reply to this topicStart new topic
> Corded the 710's today, they lasted very well
Trekkor
post Jun 3 2006, 11:32 PM
Post #1


I do things...
*****

Group: Members
Posts: 7,809
Joined: 2-December 03
From: Napa, Ca
Member No.: 1,413
Region Association: Northern California
I put my old set of 710's back on 5½ rims for a/x only.

We had thought they lost their new tire tire grip.
After about 7 a/x's and 14-16 hours of track time they finally gave it up.

I was spinning out all day. I first thought it was due to going back on the narrow rims while overdriving the car. My head kept telling me I was on 7's.

Could have been. I finally got "my" run at the end of the day. Even with these tire scalded, I was able to get within 2 seconds of TTOD and may have been in the top five.
After the day was over I had a 2 inch wide corded patch around most of the left rear tire.


Fun day.

Crazy thing was, on the run's when I spun out and came to complete stop, I still beat some people. Cost me about 6-7 seconds.

KT
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DanT
post Jun 3 2006, 11:38 PM
Post #2


Going back to the Dark Side!
****

Group: Members
Posts: 4,300
Joined: 4-October 04
From: Auburn, CA
Member No.: 2,880
Region Association: None
good thing none of your competitors saw the cord....they could protest you and throw out your last run....not good if that was your best of the day...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Trekkor
post Jun 3 2006, 11:50 PM
Post #3


I do things...
*****

Group: Members
Posts: 7,809
Joined: 2-December 03
From: Napa, Ca
Member No.: 1,413
Region Association: Northern California
Really? protest?
Wow...

Here's how it came down:

58- spin
58-spin ( noticed some chunking )
53- clean
57-spin
53-clean
54- clean
51- clean
59- spin ( corded )


KT
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Trekkor
post Jun 3 2006, 11:53 PM
Post #4


I do things...
*****

Group: Members
Posts: 7,809
Joined: 2-December 03
From: Napa, Ca
Member No.: 1,413
Region Association: Northern California
Also TTOD guy had the slowest time of the day as well.

:49 and 2:17 (IMG:style_emoticons/default/chairfall.gif)

KT
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DanT
post Jun 3 2006, 11:58 PM
Post #5


Going back to the Dark Side!
****

Group: Members
Posts: 4,300
Joined: 4-October 04
From: Auburn, CA
Member No.: 2,880
Region Association: None
Yes, the rules used to specifically state that you could not be showing any cord after a run...if you were and protested your run just previous to discovering the cording would be removed.

I dont' know if it is in the new points system....although that type of stuff was not supposed to be changed or eliminated.
who knows for sure.......it boils down to a safety issue...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
grantsfo
post Jun 4 2006, 11:29 AM
Post #6


Arrrrhhhh!
****

Group: Members
Posts: 4,327
Joined: 16-March 03
Member No.: 433
Region Association: None
Great to see that 710's last so long!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Joe Ricard
post Jun 4 2006, 01:23 PM
Post #7


CUMONIWANNARACEU
*****

Group: Members
Posts: 6,811
Joined: 5-January 03
From: Gautier, MS
Member No.: 92
SCCA has that rule.
at least our Region does.
Trek you can only drive to the limit of the tires. Smoother with less wheel spin is usually faster.

Rea wheels spin when coming unloaded in a turn. More spring less rear bar and less rear camber.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
nebreitling
post Jun 4 2006, 07:48 PM
Post #8


Member Emeritus
****

Group: Members
Posts: 3,314
Joined: 26-March 03
From: San Francisco
Member No.: 478
QUOTE(grantsfo @ Jun 4 2006, 10:29 AM) *

Great to see that 710's last so long!



not so much, actually, in my experience. i've run 4 AXs on them, with tire reconditioner/maintainer after each day. after 3 AXs my 710s lost significant performance. my hoosier's were competitive through 4 AX's, lasted through 6. but the 710s are already worse than my hoosiers on their 6th AX.

that's okay, they've got an ass-load of rubber still, so i'll use them for a couple summer DEs.

ymmv, maybe i'm harder on tires than trek. certainly, it's easier to overdrive the 710s -- they work at higher slip angles and are much more progressive than the hoosiers.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Trekkor
post Jun 4 2006, 10:44 PM
Post #9


I do things...
*****

Group: Members
Posts: 7,809
Joined: 2-December 03
From: Napa, Ca
Member No.: 1,413
Region Association: Northern California
(IMG:style_emoticons/default/ohmy.gif)


KT


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
nebreitling
post Jun 4 2006, 10:50 PM
Post #10


Member Emeritus
****

Group: Members
Posts: 3,314
Joined: 26-March 03
From: San Francisco
Member No.: 478
HA! good work, trek.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Virgil
post Jun 21 2006, 05:41 PM
Post #11


Member
**

Group: Members
Posts: 66
Joined: 7-June 06
From: South Korea
Member No.: 6,182
How do u get 7 inch wide rims on this car? Is it sensible to say you have to do a five-lug conversion to get the appropriate rims on there as well as the fender flares?[


quote name='trekkor' date='Jun 4 2006, 02:32 PM' post='695413']
I put my old set of 710's back on 5½ rims for a/x only.

We had thought they lost their new tire tire grip.
After about 7 a/x's and 14-16 hours of track time they finally gave it up.

I was spinning out all day. I first thought it was due to going back on the narrow rims while overdriving the car. My head kept telling me I was on 7's.

Could have been. I finally got "my" run at the end of the day. Even with these tire scalded, I was able to get within 2 seconds of TTOD and may have been in the top five.
After the day was over I had a 2 inch wide corded patch around most of the left rear tire.


Fun day.

Crazy thing was, on the run's when I spun out and came to complete stop, I still beat some people. Cost me about 6-7 seconds.

KT
[/quote]
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
grantsfo
post Jun 21 2006, 06:41 PM
Post #12


Arrrrhhhh!
****

Group: Members
Posts: 4,327
Joined: 16-March 03
Member No.: 433
Region Association: None
You can find new custom made wheels and used wheels that are 7" wide. I fit 8" custom made Kiezer wheels under my rolled rear fenders. Both require baseball bat rolling of the rear fender lip and proper back spacing. Front fenders dont require any mods.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Trekkor
post Jun 21 2006, 09:54 PM
Post #13


I do things...
*****

Group: Members
Posts: 7,809
Joined: 2-December 03
From: Napa, Ca
Member No.: 1,413
Region Association: Northern California
custom made 7" steel wheels with 5" backspace.

KT


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
GaroldShaffer
post Jun 23 2006, 10:54 AM
Post #14


You bought another 914?
*****

Group: Benefactors
Posts: 7,620
Joined: 27-June 03
From: Portage, IN
Member No.: 865
Region Association: None
QUOTE(grantsfo @ Jun 21 2006, 04:41 PM) *

You can find new custom made wheels and used wheels that are 7" wide. I fit 8" custom made Kiezer wheels under my rolled rear fenders. Both require baseball bat rolling of the rear fender lip and proper back spacing. Front fenders dont require any mods.


(IMG:style_emoticons/default/agree.gif) I like my Kiezer's.



Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Jun 26 2006, 09:59 PM
Post #15


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
Nathan nailed it.

The 710's dont last (IMG:style_emoticons/default/smile.gif) Kuhmo specifically tells you this in their data sheet.

One solid weekend of front class running road racing and they are done.

They last longer in a AutoX scenerio, but I still only got 4 autoX's on them before they were worthless (running in the top 10 at 140 car+ events)

Be VERY careful with some of this information.

Somebody who runs 15seconds a lap slower than you in the same car on the same tires.. will obviously run longer on his tires.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Trekkor
post Jun 26 2006, 10:23 PM
Post #16


I do things...
*****

Group: Members
Posts: 7,809
Joined: 2-December 03
From: Napa, Ca
Member No.: 1,413
Region Association: Northern California
Right now I'm trying to get twenty hours of track time at DE's.
These tires should get me that.

Competitive laps times are not important to me...yet.

When I finally time trial I hope to have a second set of stickies. (IMG:style_emoticons/default/smile.gif)


KT
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
9146R
post Jun 27 2006, 01:35 PM
Post #17


Member
**

Group: Members
Posts: 223
Joined: 28-September 04
From: alamo ca
Member No.: 2,849
I corded my Hoosiers at B'willow this weekend. After adding up the heat cycles (mostly track day run groups - only 2 autox events) I tallied ~ 25 cycles or run groups. Am considering replacing with Avon product similar to the R304S. Anyone had track experience with these - longevity - "sticktion" or "feel" of these vs the Hoosiers on track. (IMG:style_emoticons/default/confused24.gif)
Greg
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Joe Ricard
post Jun 27 2006, 03:25 PM
Post #18


CUMONIWANNARACEU
*****

Group: Members
Posts: 6,811
Joined: 5-January 03
From: Gautier, MS
Member No.: 92
SO I am allowed one stupid question a day and this is it.
Why not buy some REAL slicks and go fast. instead of DOT R tires?

Would they not last as long? R45 compound Hoosiers surely would be sticker and last longer. Probably not worth beans for AX.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
grantsfo
post Jun 27 2006, 03:36 PM
Post #19


Arrrrhhhh!
****

Group: Members
Posts: 4,327
Joined: 16-March 03
Member No.: 433
Region Association: None
GRmotorsports article on street and r compounds

http://www.grassrootsmotorsports.com/image...15_tiretest.pdf
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
J P Stein
post Jun 27 2006, 04:49 PM
Post #20


Irrelevant old fart
*****

Group: Members
Posts: 8,797
Joined: 30-December 02
From: Vancouver, WA
Member No.: 45
Region Association: None
QUOTE(Joe Ricard @ Jun 27 2006, 02:25 PM) *

SO I am allowed one stupid question a day and this is it.
Why not buy some REAL slicks and go fast. instead of DOT R tires?

Would they not last as long? R45 compound Hoosiers surely would be sticker and last longer. Probably not worth beans for AX.


Why use race tires when your not racin'?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · The Paddock · Next Newest »
 

2 Pages V  1 2 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 7th May 2024 - 01:02 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...