diagnose my rear tire wear.. new nt01, 1 trackday

w00tw00t · 02-26-2017, 01:32 PM

Question for experienced track rats..

This is my NT01, rear, after 1 track day.. 7 sessions, 20 minutes.. around 1:47 pace at laguna.

right side is outside edge.

Do I need more rear neg camber?

roastbeef · 02-26-2017, 01:40 PM

How do your fronts look? I get a similar wear, but by the time I have rotated them to the front and they get bald, the tires have pretty even wear and they are spent.

w00tw00t · 02-26-2017, 02:07 PM

Quote:

Originally Posted by roastbeef

How do your fronts look? I get a similar wear, but by the time I have rotated them to the front and they get bald, the tires have pretty even wear and they are spent.

fronts look much more even. unfortunately this is a f82 and i'm running an non square setup - 275/305. So can't rotate.. my alignment guy says it might need adjustment, adjust toe or somethign.. he'll take a look next week.

roastbeef · 02-27-2017, 04:04 AM

it doesn't really look like you're scrubbing them enough to really wear the edges as rapidly as you think. meaning- the tires look pretty clean for a track day. what hot psi were you running them at? i'm thinking maybe too low of psi at laguna might cause more edge wear. i run a little lower psi at the big roval tracks where i'm scrubbing at highers speeds and creating a lot of heat (more hot pressure), but at laguna seca, i think my sweet spot has been 32 psi hot.

G-Lo408 · 02-27-2017, 02:59 PM

To me it looks good

admranger · 02-27-2017, 05:06 PM

"Moar negative camber please" is what that tire is telling me.

1MOREMOD · 02-27-2017, 05:12 PM

Yeah same looks like my fronts do and rotate them around but as you said you can't

w00tw00t · 02-27-2017, 11:23 PM

yo 1MOREMOD!

1MOREMOD · 02-28-2017, 09:12 AM

What's up buddy you out for leisurely drive at laguna

CorruptCommie · 02-28-2017, 10:38 AM

You can flip them inside out on the rim if you start to wear the outside too much.

Richbot · 02-28-2017, 10:51 AM

Quote:

Originally Posted by CorruptCommie

You can flip them inside out on the rim if you start to wear the outside too much.

This if the car's balance feels good don't touch anything and just flip them after a couple days. Soft stockish springs will let the rear suspension start to decamber a bit more than optimal but that's not a good reason to wreck the car's balance if it's handling well

Also the sjoulder will look worse than it really is if you drive a cooldown lap without loading them up because the outside shoulder gets hot and then doesn't get scrubbed against the road during the cool-down/paddock driving

w00tw00t · 02-28-2017, 04:09 PM

Quote:

Originally Posted by 1MOREMOD

What's up buddy you out for leisurely drive at laguna

ya man, 1:47 and struggling... I am just a shitty driver lol..

w00tw00t · 02-28-2017, 04:10 PM

Quote:

Originally Posted by Richbot

This if the car's balance feels good don't touch anything and just flip them after a couple days. Soft stockish springs will let the rear suspension start to decamber a bit more than optimal but that's not a good reason to wreck the car's balance if it's handling well

Also the sjoulder will look worse than it really is if you drive a cooldown lap without loading them up because the outside shoulder gets hot and then doesn't get scrubbed against the road during the cool-down/paddock driving

this! great advice thank you! .. that's probably what's happening.. also I was running 36 psi hot on my nt01, I believe I should run lower pressure right - 33-34?

1MOREMOD · 02-28-2017, 04:37 PM

Quote:

Originally Posted by w00tw00t

ya man, 1:47 and struggling... I am just a shitty driver lol..

We are just old and slow in general. Yes lower pressure hot is better on nt01s

roastbeef · 02-28-2017, 05:05 PM

32 is the sweet spot for me at Laguna. I forgot to check pressures on a new set of tires once and I was struggling for traction in the front and back. It makes a big difference.

w00tw00t · 02-28-2017, 05:33 PM

Quote:

Originally Posted by roastbeef

32 is the sweet spot for me at Laguna. I forgot to check pressures on a new set of tires once and I was struggling for traction in the front and back. It makes a big difference.

ah, that's why I was so slow... hehe, next time I'll lower to 32.. trying to get to 1:45 at laguna..

redpriest · 02-28-2017, 05:38 PM

Diagnose mine - 1 track day:

roastbeef · 02-28-2017, 05:39 PM

Quote:

Originally Posted by redpriest

Diagnose mine - 1 track day:

Diagnosis: too much skinny pedal fun.

1MOREMOD · 02-28-2017, 06:23 PM

Quote:

Originally Posted by w00tw00t

ah, that's why I was so slow... hehe, next time I'll lower to 32.. trying to get to 1:45 at laguna..

Shoot for sub 1:40 be hpde champ

w00tw00t · 02-28-2017, 10:23 PM

Quote:

Originally Posted by 1MOREMOD

Shoot for sub 1:40 be hpde champ

That's the ultimate goal.. just 7 seconds..

1MOREMOD · 02-28-2017, 11:57 PM

Shouldn't be hard. I remember when I thought sub 1:40 was okay at pacific and now wanna flirt with 1:30

C-los · 03-01-2017, 07:25 PM

Considering the right side is the outter edge. Either a, you have too much camber for that track and/or you ability, or two you havent pushed hard enough. If you notice that line by the right side, thats where your grip potential is ending. Meaning you have about a half inch ish (im not there) of tire potential. Personally i think youre ok, you have room to grow.

02-26-2017, 01:32 PM	#1
w00tw00t Colonel 408 Rep 2,171 Posts Drives: 2016 MW M4 Join Date: Oct 2010 Location: San Jose, CA iTrader: (13)	diagnose my rear tire wear.. new nt01, 1 trackday Question for experienced track rats.. This is my NT01, rear, after 1 track day.. 7 sessions, 20 minutes.. around 1:47 pace at laguna. right side is outside edge. Do I need more rear neg camber?
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02-26-2017, 01:40 PM	#2
roastbeef Lieutenant General 11586 Rep 12,726 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	How do your fronts look? I get a similar wear, but by the time I have rotated them to the front and they get bald, the tires have pretty even wear and they are spent. __________________ Instagram; @roastbeefmike
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02-27-2017, 04:04 AM	#4
roastbeef Lieutenant General 11586 Rep 12,726 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	it doesn't really look like you're scrubbing them enough to really wear the edges as rapidly as you think. meaning- the tires look pretty clean for a track day. what hot psi were you running them at? i'm thinking maybe too low of psi at laguna might cause more edge wear. i run a little lower psi at the big roval tracks where i'm scrubbing at highers speeds and creating a lot of heat (more hot pressure), but at laguna seca, i think my sweet spot has been 32 psi hot. __________________ Instagram; @roastbeefmike
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02-27-2017, 02:59 PM	#5
G-Lo408 El Eme Tres! 25 Rep 287 Posts Drives: 08 E92 M3 Join Date: Jul 2011 Location: San Jose, CA iTrader: (1)	To me it looks good __________________ Zero Ocho BMW Eme Tres
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02-27-2017, 05:06 PM	#6
admranger Retired Curmudgeon 2985 Rep 4,047 Posts Drives: ‘19 X3M40i, ‘18 m550i Join Date: May 2011 Location: Las Vegas, NV iTrader: (1)	"Moar negative camber please" is what that tire is telling me. __________________ '19 X3 M40 Carbon Black/Oyster, '23 Jeep Grand Cherokee L Summit, Past BMWs: '18 M550i, '18 330 GT, '16 X5 40e, '11 E90M3, '06 X5 4.4, '03 330i ZHP, '02 M3, '97 Z3 2.8, '95 M3 (2x), '94 530i (manual), '92 525i (manual), '88 M3, '87 325iS
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02-27-2017, 05:12 PM	#7
1MOREMOD - 11817 Rep 23,187 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	Yeah same looks like my fronts do and rotate them around but as you said you can't
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02-27-2017, 11:23 PM	#8
w00tw00t Colonel 408 Rep 2,171 Posts Drives: 2016 MW M4 Join Date: Oct 2010 Location: San Jose, CA iTrader: (13)	yo 1MOREMOD!
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02-28-2017, 09:12 AM	#9
1MOREMOD - 11817 Rep 23,187 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	What's up buddy you out for leisurely drive at laguna
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02-28-2017, 10:38 AM	#10
CorruptCommie First Lieutenant 346 Rep 396 Posts Drives: 2011 X5d Join Date: May 2014 Location: Cincinnati, OH iTrader: (0)	You can flip them inside out on the rim if you start to wear the outside too much. __________________
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02-28-2017, 05:05 PM	#15
roastbeef Lieutenant General 11586 Rep 12,726 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	32 is the sweet spot for me at Laguna. I forgot to check pressures on a new set of tires once and I was struggling for traction in the front and back. It makes a big difference. __________________ Instagram; @roastbeefmike
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02-28-2017, 05:38 PM	#17
redpriest Colonel 2147 Rep 2,527 Posts Drives: 2011 M3/Porsche 992 GT3RS Join Date: Apr 2014 Location: Bay Area, CA iTrader: (0) Garage List 2024 Porsche 911 GT3RS [0.00] 2021 Porsche 718 Sp ... [0.00] 2021 Mazda Miata MX-5 [0.00] 2006 BMW M3 [0.00] 2011 BMW M3 [10.00]	Diagnose mine - 1 track day: Attached Images __________________ '06 BMW M3 ZCP 6MT \| JRZ RS Pro + Hyperco 650/750 \| Epic Tune \| Brembo 355mm BBK \| too many to list '11 BMW M3 ZCP DCT \| Akra Evolution \| Eventuri intake \| MCS 3-way \| 4.6L Carbahn S65 \| Zebulon Aero \| AP Racing Radi-CAL BBK by Essex \| 305/645-18 Pirelli DHB Porsche 992 GT3, 991.2 GT3RS, 718 Spyder instagram.com/titomanlio
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02-28-2017, 11:57 PM	#21
1MOREMOD - 11817 Rep 23,187 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	Shouldn't be hard. I remember when I thought sub 1:40 was okay at pacific and now wanna flirt with 1:30
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03-01-2017, 07:25 PM	#22
C-los Second Lieutenant 64 Rep 258 Posts Drives: 2013 M3 Join Date: Feb 2014 Location: Tx iTrader: (4)	Considering the right side is the outter edge. Either a, you have too much camber for that track and/or you ability, or two you havent pushed hard enough. If you notice that line by the right side, thats where your grip potential is ending. Meaning you have about a half inch ish (im not there) of tire potential. Personally i think youre ok, you have room to grow.
	Appreciate 0 Quote