Hoosier slick side wall separation?
11-13-2011, 10:58 PM
#1
Rennlist Member
Thread Starter
Hoosier slick side wall separation?
Is this this a failure?? or cosmetic? 04 cup, 4 heat cycles inside LR @ LRP reasonably hard driving. I'm guessing more Neg camber that the tire requires. (-4.0)
11-14-2011, 12:51 AM
#6
Burning Brakes
Contact Hoosier, but I have been told their recommended neg camber is way less than -4.
From memory I think they wanted -2.5 to -3 max.
They were supposed to be working with Porsche on some new compounds, don't know what the outcome of that was.
From memory I think they wanted -2.5 to -3 max.
They were supposed to be working with Porsche on some new compounds, don't know what the outcome of that was.
11-14-2011, 01:08 AM
#7
Rennlist Member
Thread Starter
That what I figured. I could not get the N1's in time for my last event this year. Tire is a bit stiffer than Michelins. Very crisp feel. Car handled great even though the camber is set up for Michelin's. This 6cup is new to me. It seems to do nothing wrong. Confidence inspiring at the limit. What is the recommended setting for Michelins?
Bob
Last edited by fstockcarrera; 11-14-2011 at 01:29 AM.
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11-14-2011, 11:09 AM
#8
Burning Brakes
Contact Jackson, I usually follow the guidelines issued by the tire manufacture.
Pirelli issues us reccomendations for each track during the Pirelli Drivers Cup.
Last event we were on a roval and a couple of the guys pushed the limit on the right rear and they paid the price by loosing thier right rear. Thank God no one was hurt.
Pirelli grabbed the tires to verify no issues with the tires. After coaxing with the teams they didnt exactly admit they "might have been a bit over the reccomendations".
Good luck with your new cup.
Pirelli issues us reccomendations for each track during the Pirelli Drivers Cup.
Last event we were on a roval and a couple of the guys pushed the limit on the right rear and they paid the price by loosing thier right rear. Thank God no one was hurt.
Pirelli grabbed the tires to verify no issues with the tires. After coaxing with the teams they didnt exactly admit they "might have been a bit over the reccomendations".
Good luck with your new cup.
11-14-2011, 12:18 PM
#10
Rennlist Member
I have run quite a few sets of Hoosiers and never had a problem. I would run them anywhere except maybe Daytona though I did run Hoosiers there this year without an issue (not many dry laps...). They are very fast in slow corners like Big Bend up to no-name straight at LRP.
Similar setup to Michelin should work fine but you don't need that much camber in the rear on any tires.
Good luck!
Similar setup to Michelin should work fine but you don't need that much camber in the rear on any tires.
Good luck!
11-14-2011, 01:06 PM
#11
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Interested to hear how you like the Hoosiers (vs. Michelin) as we are thinking about trying them next season. Found this sheet on camber and tire pressure for GT on their website, good luck with the car!
Hoosier GT Tire Information
Hoosier GT Tire Information
11-14-2011, 01:50 PM
#12
Rennlist Member
Thread Starter
Interested to hear how you like the Hoosiers (vs. Michelin) as we are thinking about trying them next season. Found this sheet on camber and tire pressure for GT on their website, good luck with the car!
Hoosier GT Tire Information
Hoosier GT Tire Information
The Hoosier's are stiffer and have crisp feel, a friend said they felt twitchy, same car different alignment, I'm sure. Car felt fine to me. I would say my fastest lap on Michelins, on my first day with the car was just before they completely gave up, was .2 slower than the hoosier stickers. But to be fair the car is not set up properly for Hoosiers or Michelins. We did a high 55 @ LRP with snow flurries.
The Hoosiers are cheaper and probably a great DE tire, but I would not set the car up for them at this time for race qualifing
11-14-2011, 02:17 PM
#13
Rennlist Member
Bob: Per your request:
Michelin Tire Recommendations for Watkins Glen
We recommend reduced camber settings and increased inflation pressures for running rear-engined 911-type cars at Watkins Glen
Please pass on the attached camber and pressure recommendations to your customers
Recommended camber settings:
LF: -3.0° to -4.0° RF: -3.0
LR: -2.5° to -3.2° RR: -2.5
Minimum hot pressures:
LF: 30 psi / 2.07 bar RF: 30 psi / 2.07
LR: 32 psi / 2.20 bar RR: 32
Thank you very much for your attention,
Michelin Motorsports
Michelin Tire Recommendations for Watkins Glen
We recommend reduced camber settings and increased inflation pressures for running rear-engined 911-type cars at Watkins Glen
Please pass on the attached camber and pressure recommendations to your customers
Recommended camber settings:
LF: -3.0° to -4.0° RF: -3.0
LR: -2.5° to -3.2° RR: -2.5
Minimum hot pressures:
LF: 30 psi / 2.07 bar RF: 30 psi / 2.07
LR: 32 psi / 2.20 bar RR: 32
Thank you very much for your attention,
Michelin Motorsports
11-14-2011, 03:02 PM
#14
Rennlist Member
Thread Starter
Bob: Per your request:
Michelin Tire Recommendations for Watkins Glen
We recommend reduced camber settings and increased inflation pressures for running rear-engined 911-type cars at Watkins Glen
Please pass on the attached camber and pressure recommendations to your customers
Recommended camber settings:
LF: -3.0° to -4.0° RF: -3.0
LR: -2.5° to -3.2° RR: -2.5
Minimum hot pressures:
LF: 30 psi / 2.07 bar RF: 30 psi / 2.07
LR: 32 psi / 2.20 bar RR: 32
Thank you very much for your attention,
Michelin Motorsports
Michelin Tire Recommendations for Watkins Glen
We recommend reduced camber settings and increased inflation pressures for running rear-engined 911-type cars at Watkins Glen
Please pass on the attached camber and pressure recommendations to your customers
Recommended camber settings:
LF: -3.0° to -4.0° RF: -3.0
LR: -2.5° to -3.2° RR: -2.5
Minimum hot pressures:
LF: 30 psi / 2.07 bar RF: 30 psi / 2.07
LR: 32 psi / 2.20 bar RR: 32
Thank you very much for your attention,
Michelin Motorsports
11-14-2011, 08:47 PM
#15
3rd Gear
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I have had the exact same problem with 3 Hoosier R6's over the past few years. It has always been a rear tire. I run them 38 psi hot. About 3 negative camber on a 993. The attached image is after 11 HC at the WGI.