09-03-2019, 04:58 PM | #15 | |
Drives: '18 1SS 1LE Join Date: Sep 2017
Location: Pennsyltucky
Posts: 2,571
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Quote:
If it were camber it would be more gradual from outside to inside wear not just right at the edge. If it were toe you'd have feather edging of the tread, not a smooth wear pattern like that.
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'18 1SS 1LE Black, PDR
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09-03-2019, 05:33 PM | #16 |
Drives: 22' Porsche PDK GT4 Join Date: Mar 2018
Location: Bay Area
Posts: 2,014
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OP, you have mods or alterations from stock anywhere up front?
Or maybe it has seen front edge damage and something is bent under there? There is definitely something else going on here.
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22' Porsche PDK GT4 (MCS 2-way remote dampers) Previous: 18' NFG 2SS 1LE (ZL1 1LE solid rear cradle bushings & Corsa Exhaust) 16' F80 M3 (Ohlin R/T Coilovers) 13' Audi TTRS (APR Stage 1, MSS Springs) 09' C6 Z06 08' E90 M3 06' 335i (KW V2 Coilovers) 03' C5 Z06 |
09-03-2019, 09:33 PM | #17 |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
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What's your tire size and what is your camber/toe spec from the shop that did the alignment? Any mods beyond stock at all? Looks like something rubbing.
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09-03-2019, 09:53 PM | #18 |
Drives: 911SC Join Date: Aug 2018
Location: DFW
Posts: 62
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I’m 2.6* front camber with over 10k miles on PS4S tires, including three track days at Cresson. Even wear, probably 5k miles left in them.
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09-03-2019, 10:25 PM | #19 |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
Posts: 5,091
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Actually, looking at the pic real close, the inside tread seems gone as well. So likely not rubbing. Perhaps excessive toe, and/or excessive understeer in R hand side corners under "very aggressive" cornering, perhaps on very abrasive pavement? Just a guess.
Can you send a pic of the L tire please? Plus your alignment specs. Also, did the shop check your current alignment to ensure it hasn't moved? Lastly, what mode is the car in when you "corner very aggressively"? |
09-03-2019, 11:19 PM | #20 |
Daily Driven 1LE
Drives: 2018 1SS 1LE Join Date: May 2018
Location: Fort Knox, KY
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That tire has to be rubbing on something.
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09-04-2019, 12:48 AM | #21 |
Drives: 2017 1SS/1LE Join Date: Sep 2016
Location: FL Panhandle
Posts: 1,559
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Toe is off. Post your alignment sheet.
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09-04-2019, 10:05 AM | #22 | |
Drives: '20 ZL1 M6 Join Date: Apr 2017
Location: FT. Lauderdale, FL
Posts: 717
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Quote:
I went back to Costco, where I bought the tires. They don't do alignment. I will be using a different, specialty shop to do the alignment this time, and I will go back to OEM specs. Costco was great. They discounted the replacement PS4S's based on the mileage proration. With 11,000 miles on the tires, I'm paying $570 mounted, balanced, including tax. Thanks for the help guys.
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Mal
Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R |
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09-04-2019, 10:09 AM | #23 |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
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Good stuff, but when are you gonna post your alignment specs?
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09-04-2019, 02:07 PM | #24 |
Drives: '20 ZL1 M6 Join Date: Apr 2017
Location: FT. Lauderdale, FL
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So here are the alignment results. Done in October, 2018, and again in May, 2019.
Two questions. 1. The toe in October looks ok. The toe in May is off. Can that amount of error kill that front tire in less than 2500 miles. 2. "If" they were not reputable and did shitty job, could they print out a bogus chart from the alignment computer? Thanks.
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Mal
Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R |
09-04-2019, 02:15 PM | #25 |
Drives: 2013 C6Z06 Join Date: Nov 2016
Location: PA
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Did you put 285/35 tires up front?
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09-04-2019, 04:00 PM | #26 |
Drives: '20 ZL1 M6 Join Date: Apr 2017
Location: FT. Lauderdale, FL
Posts: 717
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Nope. OEM sizes all around.
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Mal
Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R |
09-04-2019, 04:15 PM | #27 | |
Drives: '18 1SS 1LE Join Date: Sep 2017
Location: Pennsyltucky
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Quote:
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09-04-2019, 05:46 PM | #28 |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
Posts: 5,091
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Both times the specs walked. The before in Oct is horrible. This means the shop didnt tighten things up properly. Assuming it was the same shop and they increaed camber in Oct and specs walked again: not surprised by the results at all. As this would only accelerate inside wear. The question that remains is what are the current specs (to assess any change between Oct and now). Yes 2500 miles is enough to ruin tires, especially if road surfaces are abrasive (high content of gravel in asphalt, or concrete).
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