02-16-2020, 03:47 AM | #29 |
Makis
Drives: 2020 Red Hot ZL1 A10 Join Date: Apr 2019
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Just a quick question: what’s the factory alignment specs?
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02-16-2020, 08:10 AM | #30 |
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Drives: 18 ZLE Join Date: May 2018
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-2.4 is more street than track and toe will eat tires, not camber.
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02-16-2020, 10:58 AM | #31 |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
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02-20-2020, 02:06 AM | #32 |
Drives: 2000 Trans Am M6 Join Date: Mar 2018
Location: Dublin, CA
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My experience with the track alignment is similar to the OP's, except I got more life out of my factory tires than most people, thanks to being unable to actually push the car in the SF Bay area's constipated traffic. I got a track alignment at 14000 miles, when all four tires appeared to be wearing evenly from edge to edge, but the outside edges on the front tires SEEMED to be wearing faster than the rest of the tire (I later read that the tread on the outer shoulder is shallower and it only APPEARS to wear faster). I requested the tech at a very reputable tire shop here to perform the track alignment with the camber set to -2.0* and 0.00 toe for the front tires. By 20000 miles the inside of the front tires were down to the steel cords but the rest of the tire looked the same as it did 6000 miles ago. Hard lesson learned right there that if you have a track alignment and you don't drive aggressively enough, all you're doing is chewing up that inside shoulder. Actual front toe in my case turned out to be 0.00 on the right side and 0.11* in on the left side but that's still within the advise the tech gave that if you're going to run aggressive negative camber in the front you counter that with a tiny bit of toe in.
My alignment after new tires is -1.5* camber and 0.06* toe in as recommended by the the shop. They also recommended that I run 36-38 PSI in the front tires as there was still a lot of tread left in the center on my old tires.
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02-20-2020, 08:47 AM | #33 |
Makis
Drives: 2020 Red Hot ZL1 A10 Join Date: Apr 2019
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02-20-2020, 11:54 AM | #34 | |
Drives: 2019 1ss 1le, blue wrap Join Date: Aug 2017
Location: Maryland
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Quote:
Wow, 20k miles on the ss 1le stock tires! That's impressive. I think there might be a relationship between tire width + camber and wear. My 1 series bmw 225 width front tires wore great with 2 degrees of camber and of lot of daily driving. If my math is right 2 degrees across 225mm lifts ~= 8mm, while the 295mm on the front Camaro tires would be ~10.5mm. |
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02-20-2020, 12:01 PM | #35 | |
Drives: 22' Porsche PDK GT4 Join Date: Mar 2018
Location: Bay Area
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Quote:
The recommended tire pressure is 32 psi cold. Anything above 36ish HOT, and you start to lose that planted feel.
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02-20-2020, 06:31 PM | #36 |
Drives: 2018 Hyper Blue 2SS 1LE Join Date: Aug 2018
Location: Dessert
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Yes, the outside 1/3rd of the tire seemed to wear faster, But it didn't. And the tread isn't any thinner on the outside 1/3rd either. What you are looking at is the tread groove pattern, and yes, that is shallower than the inner 2/3rds of the tire. But if you measure the tread depth at the holes in the outer portion of the tire, you will find that the tread is indeed the same depth all the way across the tire. Remember, tread isn't the grooves you see in the tire, it is the usable rubber laid on the carcass of the tire. Racing slicks have tread too even though they don't generally have grooves in the tread.
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2018 Hyper Blue Metallic 2SS 1LE with Nav, PDR, and track alignment
1:34.20 Willow Springs Big Track Last edited by Scargoes; 02-20-2020 at 06:31 PM. Reason: speeling |
02-20-2020, 08:29 PM | #37 | ||
Drives: 2013 C6Z06 Join Date: Nov 2016
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Quote:
Quote:
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02-24-2020, 02:51 AM | #38 | |
Drives: 2000 Trans Am M6 Join Date: Mar 2018
Location: Dublin, CA
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Quote:
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02-24-2020, 02:57 AM | #39 | |
Drives: 2000 Trans Am M6 Join Date: Mar 2018
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Quote:
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02-24-2020, 07:00 PM | #40 | |
Drives: 2018 Hyper Blue 2SS 1LE Join Date: Aug 2018
Location: Dessert
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Quote:
In the case of the SC3, why would there be tread depth holes deeper than the tread pattern on the outside edge of the tire if the tire is worn out when those grooves are gone?
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2018 Hyper Blue Metallic 2SS 1LE with Nav, PDR, and track alignment
1:34.20 Willow Springs Big Track |
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02-24-2020, 08:33 PM | #41 |
Drives: 2013 C6Z06 Join Date: Nov 2016
Location: PA
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No, a slick doesn't have tread, exactly why it's called a slick...
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02-24-2020, 08:58 PM | #42 |
Drives: 2018 Hyper Blue 2SS 1LE Join Date: Aug 2018
Location: Dessert
Posts: 486
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If a slick doesn't have tread, why does it come with tread depth holes?
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2018 Hyper Blue Metallic 2SS 1LE with Nav, PDR, and track alignment
1:34.20 Willow Springs Big Track |
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