06-03-2023, 03:16 PM | #1 |
Drives: 2018 Hyper Blue ZL1 1LE Join Date: Dec 2018
Location: CA
Posts: 1,360
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ZLE GY 3R Rear Tire Life
Hi, I have 2 pairs of "track-only used" 325/30/19 GY 3R and trying to decide if they are still adequate for track. In my experience with many track events on 3Rs, they are the most heat-cycle proof tire I've used compared to others (PSC2, Hoosier R7, Pirelli DH slick)
Both pairs of 3R rears have no cording and decent tread left with ~2 remaining track days tread on 1 pair, and maybe only 1 day left on the other. I know the fronts are typically good until the cord, no matter how many heat cycles. The rears usually last 2x as long as the fronts. Question I have: are the rears also still very good on track until they cord (or lose all tread), no matter how many heat cycles? Thanks! |
06-03-2023, 04:25 PM | #2 |
Drives: 2020 Rally Green ZL1-1LE Join Date: May 2020
Location: Illinois
Posts: 320
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I used my original set for 4 track days. The first time I tracked the car was in mid 2020 and the last time I tracked the car with the same tires was 2022. The car was built in Nov of 2019.
No doubt they lost performance but I'm not a 10 10ths driver. I managed to put down a 1:18 at Putnam Park in Sept 2022 with the original tires that came on the car when it drove off the lot. |
06-03-2023, 08:16 PM | #3 |
Drives: 997 GTS, ZL1 A10, ZLEM6, ZLEA10 Join Date: Dec 2017
Location: NYC/NJ
Posts: 630
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Given that the rears last much longer than fronts wear wise - in my experience- they do heat cycle out. I have lost rear end grip after 8 track days with the rears. That would be about 35 sessions…so yes, they heat cycle out…
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06-03-2023, 08:58 PM | #4 | |
Drives: Chevrolet Camaro ZL1 1LE Join Date: Oct 2021
Location: NY
Posts: 701
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Quote:
1.5 days out of mine but I'm 10-10ths. |
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06-03-2023, 10:43 PM | #5 | |
Drives: 2018 Hyper Blue ZL1 1LE Join Date: Dec 2018
Location: CA
Posts: 1,360
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Quote:
Also I see you list your ZL1 stable as 1) ZL1 A10, 2) ZLEM6, 3) ZLEA10. Is that still the case, you have 3 ZL1s including 2 ZLEs? If so that's impressive, you clearly love the ZL1 and it's understandable. Thanks for the feedback, based on this I think my relatively low use 3Rs are good to go :-) |
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06-04-2023, 05:15 AM | #6 |
Drives: 997 GTS, ZL1 A10, ZLEM6, ZLEA10 Join Date: Dec 2017
Location: NYC/NJ
Posts: 630
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Thanks! Yes I love the Zl1. Unfortunately I only own 1 at a time. That’s not even the full list, to be precise I have owned 5 of them
Yeah the front- they only last 2 track days. Btw we don’t have open lapping in our track days, so think 1 hr track time per day max. In retrospect maybe the rears are more like 6 days…but the point I was trying to make is that unlike the front the tears don’t wear out for me - they HC out..the front wear out… |
06-04-2023, 11:05 AM | #7 |
Drives: 2015 Z/28 Join Date: Jun 2011
Location: Rhode Island
Posts: 245
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Similar experience with the 3Rs. Fronts, I will get 11-13 20 minute sessions out of before cording. Rears, anywhere from 28 to 35+ sessions, however, by the time I get to the 24th-25th session on the rears, the grip is noticeably diminished. Not really a big deal though, just can't lean on the rear as hard and it moves around a little more.
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06-05-2023, 11:09 AM | #8 |
Drives: 2020 Camaro ZL1 Join Date: Oct 2020
Location: Fort Worth, Texas
Posts: 1,135
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Silly question i'm sure, but is it ok to "cycle" out new fronts and keep old rears for track days until the rears become noticeably diminished?
__________________
2020 ZL1 A10 Shadow Gray Metallic
Magnuson Magnum DI TVS2650R| Mamo Throttle Body V2| RotoFab Intake| Borla S-Type Catback Exhaust| TCM Tune| Tune| Eibach Pro| BMR Rear Cradle Lockout| PPF| Ceramic| BCForged HCS21 |
06-05-2023, 04:31 PM | #9 |
Drives: 2015 Z/28 Join Date: Jun 2011
Location: Rhode Island
Posts: 245
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Yip, if you track a lot, keep them till they cord or until you can no longer tolerate the lack of grip. If not, it will get real expensive.
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06-05-2023, 08:32 PM | #10 | |
Drives: ZL1 1LE, bolt, scary flatbed, hhr, Join Date: Apr 2023
Location: Florida
Posts: 67
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Quote:
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06-06-2023, 02:12 PM | #11 | |
Drives: 2018 Hyper Blue ZL1 1LE Join Date: Dec 2018
Location: CA
Posts: 1,360
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Quote:
So I recommend tossing rears once the tread looks very low with no edges remaining on blocks/grooves. There may be life left but you never know and they can be dangerous on an unforgiving track like Big Willow. |
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06-06-2023, 02:16 PM | #12 | |
Drives: 2020 Camaro ZL1 Join Date: Oct 2020
Location: Fort Worth, Texas
Posts: 1,135
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Quote:
__________________
2020 ZL1 A10 Shadow Gray Metallic
Magnuson Magnum DI TVS2650R| Mamo Throttle Body V2| RotoFab Intake| Borla S-Type Catback Exhaust| TCM Tune| Tune| Eibach Pro| BMR Rear Cradle Lockout| PPF| Ceramic| BCForged HCS21 |
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