Rennlist Discussion Forums   classifieds | membership | rennlist | photo album    
sponsors | upload photo | chat    
 
Go Back   Rennlist Discussion Forums > Performance & Competition Discussion Areas > Racing & Drivers Education Forum
Sign in using an external account
Register Forgot Password?
Search


Reply
 
Thread Tools Search this Thread
Old 01-21-2014, 03:52 PM   #16
ProCoach
Rennlist Member
Rennlist
Small Business Partner

 
ProCoach's Avatar
 
Join Date: Jul 2008
Location: Durham, NC and Virginia International Raceway
Posts: 3,274
peter.krause VintageProCoach
Default

Quote:
Originally Posted by sbelles View Post
So, are they at their best on the first heat cycle like R6s or do they get better up to a point. How many heat cycles do you get while they are competitive.
I can't answer about the "sweet spot," like the X6's, but I can tell you that we were as quick on the sixth heat cycle as we were on the third. Consistency was terrific, and we wore out before we slowed down.
To remove this ad, register today or login if you already are registered!

__________________
-Peter Krause
www.peterkrause.net
"The Driver is the Greatest Performance Variable in the Racing Equation"
Private, Professional and Individual Driver Performance Analysis Trackside in North America and Remotely
Authorized, Value-Added Traqmate, AiM Sports, Video VBOX HD, MoTeC C125/C185, Race-Keeper HDX2 and SmartyCam HD Dealer
ProCoach is offline   Reply With Quote
Old 01-21-2014, 07:45 PM   #17
philstireservice
Basic Sponsor
Rennlist
Site Sponsor

 
philstireservice's Avatar
 
Join Date: Feb 2008
Location: New York
Posts: 170
Default

^^ This is the general conscensus.....
__________________
Phil and Kim
Phil's Tire Service
http://www.philstireservice.com
BFG Hoosier Michelin slicks Toyo
Enkei Jongbloed Victor Equipment
philstireservice is offline   Reply With Quote
Old 01-22-2014, 12:49 AM   #18
paradocs98
Addict
Rennlist Member
 
paradocs98's Avatar
 
Join Date: May 2010
Location: NY
Posts: 272
Default

I went through two sets on my 2011 M3 sedan, and liked them very much. This was after three sets of NT01s. I got about 16 heat cycles / 4 DE days out of the RRs, running in Advanced. By comparison, I would typically be able to make a set of NT01s last a whole season of 10 DE events by rotating them all around (square setup).

The RRs were very grippy and consistent, but became very slippery when pressures ran too high (above 39 psi hot on the 3600lb M3). They don't squeal like an NT01 at the limit, but they still do communicate audibly. They allowed me to be faster than about everything other than GT3s, GTRs, and Z06s in my 4-door sedan.

Now I have the dilemma of finding a good daily driver / track combo tire for my 991 Carrera S...
paradocs98 is offline   Reply With Quote
Old 02-05-2014, 08:58 AM   #19
jrgordonsenior
Addict
Rennlist Member
 
jrgordonsenior's Avatar
 
Join Date: Oct 2004
Location: Vacuuming Cal Speedway
Posts: 6,688
Default

Anyone experienced this "Visible Tread Splice" issue with the RR's?...

http://www.google.com/url?sa=t&rct=j...jvz2KvUiLU8CWA
__________________
JR Gordon
99' 3.4/3.6 996
POC- GT3 Champion 2010, 2011
NASA- ST2 So Cal Champion 2010, 2011
I drive therefore I am.....
jrgordonsenior is offline   Reply With Quote
Old 02-05-2014, 10:30 AM   #20
f1rocks
Addict
Rennlist Member
 
f1rocks's Avatar
 
Join Date: Mar 2005
Location: Brentwood, TN
Posts: 1,802
Default

Quote:
Originally Posted by jrgordonsenior View Post
Anyone experienced this "Visible Tread Splice" issue with the RR's?...

http://www.google.com/url?sa=t&rct=j...jvz2KvUiLU8CWA
Had this condition with the first two sets of RR's. Have been getting the later 2013 build dates and the issue is now cosmetic and usually heals itself.

The early builds were chunking and splitting badly. These are still handmade tires so I think Toyo has does some qc work to improve build consistency. It is a PIA to have to swap tires on corners instead of just front to back. You get used to it. I have to run them as a spec tire. Would have been happy to stick with the RA1's and be a couple seconds slower.
__________________
Brent
f1rocks is offline   Reply With Quote
Old 02-05-2014, 11:58 AM   #21
Pete
Rennlist F1 Professor Emeritus
PhD, No BS
Rennlist Member
 
Pete's Avatar
 
Join Date: Jul 2006
Posts: 7,593
Default

Quote:
Originally Posted by f1rocks View Post
Had this condition with the first two sets of RR's. Have been getting the later 2013 build dates and the issue is now cosmetic and usually heals itself.

The early builds were chunking and splitting badly. These are still handmade tires so I think Toyo has does some qc work to improve build consistency. It is a PIA to have to swap tires on corners instead of just front to back. You get used to it. I have to run them as a spec tire. Would have been happy to stick with the RA1's and be a couple seconds slower.
+1 on all accounts
Pete is online now   Reply With Quote
Old 02-05-2014, 12:39 PM   #22
Andrew D.
Addict
Rennlist Member
 
Andrew D.'s Avatar
 
Join Date: Jun 2006
Posts: 199
Default

Quote:
Originally Posted by paradocs98 View Post
The RRs were very grippy and consistent, but became very slippery when pressures ran too high (above 39 psi hot on the 3600lb M3).
What hot pressure is recommended?
__________________
President - Porsche Owners Club (POC)
'10 PDK Boxster S
'07 997 GT3
'06 987 Boxster S - sold
'04 996 C4S - sold
'00 996 C4 Milennium - sold
'97 Boxster Spec POC #321
'99 Boxster - BSX POC #821
Andrew D. is offline   Reply With Quote
Old 02-05-2014, 01:02 PM   #23
Streak
Perfect Angel
Rennlist Member
 
Streak's Avatar
 
Join Date: Jun 2007
Location: Beyond the Pale
Posts: 5,645
Default

^^ This

I got some good advice about starting pressures. They aren't like RA1's in that respect so I started higher. During the enduro at Sebring they got over 45 psi at the pitstop. Backed them to 35 psi and they felt good but I think they may like to be higher than that.
__________________
"There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now."---unknown....

"Up yours, cupcake." Veloce Raptor

2010 VW GTI
1999 Spec Boxster #611

2001 Boxster (sold)
1986 911 Carrera #611 (sold)
GTS 2 E Stock

http://611RACING.com
Member OG Racing Team www.ogracing.com
Videos

"Life sucks, get a helmet." - Denis Leary
Streak is online now   Reply With Quote
Old 02-05-2014, 02:15 PM   #24
Protocav
Addict
Rennlist Member
 
Protocav's Avatar
 
Join Date: Jan 2009
Location: SD, CA
Posts: 180
Default

Quote:
Originally Posted by jrgordonsenior View Post
Which tire are you talking about?...
Sorry, the NT-01.

absolutely wonderful tire until it is just about to cord and then the grip is inconsistent and low. It is a full slick with no tread or circumferential grooves at this point.
Protocav is offline   Reply With Quote
Old 02-05-2014, 03:19 PM   #25
Sterling Doc
Addict
Rennlist Member
 
Sterling Doc's Avatar
 
Join Date: May 2006
Location: Sterling, IL
Posts: 1,113
Default

Good info here.

We did a lot of back to back testing with National Championship caliber drivers in 944 Spec. There was an interesting phenomenon, that while stickers felt a little better, and came into grip more quickly, in each of 6 tests the old tires (average 18 heat cycles) were ultimitely a hair faster in ultimate lap times in 944 Spec. The difference was small enough that it was likely a wash, but it their consistancy was amazing. We'd also set fast lap at the end of a 4+ hour enduro. Stickers were slightly more consistant, but not outright faster.

They do like more camber, and will cord the outside edge quickly if without agressive camber (approaching 4 degrees on the front a a 944 Spec car). They like a few lbs less pressure than an RA-1 in our expience. With the right setup, we got life at least the equal of the recent RA-1's.

They were a good 2 seconds faster on most tracks. At Road America, it was at least 3 seconds (got down to 2:42's on 135 RWHP). No track record was left standing. The split issue was a big deal in the beginning, but not now, with following the recomendations and newer batches of tires.
__________________
Eric Kuhns
Small town Doc, in Sterling, IL.
NASA National 944 Spec Director
#80 Pinetree Motorsports BRZ
2 Time National Champion NASA 944 Spec


2013 Subaru BRZ
2007 Audi A3
2012 Dodge Durango

Past flings:
2002 911 Targa
1986 "Sunoco" 944 Spec
1988 944S
Sterling Doc is offline   Reply With Quote
Old 02-06-2014, 06:48 PM   #26
philstireservice
Basic Sponsor
Rennlist
Site Sponsor

 
philstireservice's Avatar
 
Join Date: Feb 2008
Location: New York
Posts: 170
Default

Test and use a tire pyrometer to set pressures!!!

Every one will have a different working pressure. If you want to be fast and have the tire last you have to fine tune!
__________________
Phil and Kim
Phil's Tire Service
http://www.philstireservice.com
BFG Hoosier Michelin slicks Toyo
Enkei Jongbloed Victor Equipment
philstireservice is offline   Reply With Quote
Old 02-06-2014, 07:00 PM   #27
Streak
Perfect Angel
Rennlist Member
 
Streak's Avatar
 
Join Date: Jun 2007
Location: Beyond the Pale
Posts: 5,645
Default

I will Phil!

I'll also know more at my home track. Sebring is not a great comparison test for me.
__________________
"There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now."---unknown....

"Up yours, cupcake." Veloce Raptor

2010 VW GTI
1999 Spec Boxster #611

2001 Boxster (sold)
1986 911 Carrera #611 (sold)
GTS 2 E Stock

http://611RACING.com
Member OG Racing Team www.ogracing.com
Videos

"Life sucks, get a helmet." - Denis Leary
Streak is online now   Reply With Quote
Old 02-06-2014, 07:10 PM   #28
Pete
Rennlist F1 Professor Emeritus
PhD, No BS
Rennlist Member
 
Pete's Avatar
 
Join Date: Jul 2006
Posts: 7,593
Default

Quote:
Originally Posted by philstireservice View Post
Test and use a tire pyrometer to set pressures!!!

Every one will have a different working pressure. If you want to be fast and have the tire last you have to fine tune!
Is there any info on additional sizes being released on the RR?
Pete is online now   Reply With Quote
Old 02-07-2014, 03:59 PM   #29
Plavan
Addict
Rennlist Member
 
Plavan's Avatar
 
Join Date: Jan 2002
Location: Clovis, CA
Posts: 651
Default

Quote:
Originally Posted by Pete View Post
Is there any info on additional sizes being released on the RR?
This!
__________________
Thanks,

J. Chad Plavan
911ST Race Car/2.5L SS Race Motor (1969 911E)
1972 911T- Numbers matching- Restoring to stock
2011 Porsche Spyder Wht/Blk Full Leather/Carbon Fiber Buckets/6MT
Factory Five 818R- Being built in my garage right now!
Plavan is offline   Reply With Quote
Old 02-08-2014, 04:03 PM   #30
philstireservice
Basic Sponsor
Rennlist
Site Sponsor

 
philstireservice's Avatar
 
Join Date: Feb 2008
Location: New York
Posts: 170
Default

205/60R13
205/50R15
225/50R15
225/45R15
225/50R16 - not released yet
245/45R16
235/40R17
255/40R17
275/40R17
275/35R18

this is all for now
__________________
Phil and Kim
Phil's Tire Service
http://www.philstireservice.com
BFG Hoosier Michelin slicks Toyo
Enkei Jongbloed Victor Equipment
philstireservice is offline   Reply With Quote
Old 02-08-2014, 04:03 PM
Rennlist



Paid Advertisement
Reply

Tags
autocross, boxster, hpde, motorhome, ra1, rain, rennlist, rr, tire, tires, toyo, track, vs

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -3. The time now is 10:10 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.1
Copyright ę 1998 - 2007 Rennlist.com

Advertise on Rennlist - Privacy Statement - Terms of Service - Jobs