ZR1 at Motor Trends Best Drivers Car Test at Laguna Seca Part 2
09-19-2018, 10:09 PM
#121
Safety Car
09-19-2018, 11:46 PM
#122
Last time I was at Laguna Seca, I had my BMW MZ4 Coupe, my buddy has his BMW 340i. He had more power and torque, I had a shorter, tighter chassis. Both on street tires, he's on Michelin Pilot Super Sports, I'm on $75 per tire Federals (RSR-R). My car IS lighter by about 200 lbs, but he had significantly more torque and slightly more power. Our clean lap times were no more than 1/2 second apart. Had I brought my slicks I probably would have been about 2 seconds faster.
Not 4 seconds. That's a freakin' eternity on track. That's almost getting your @ss lapped in a 30 minute sprint difference.
09-20-2018, 05:05 AM
#123
Not even close bruh. Theres a reason every mag has been swapping to the Rs for the track and Cup 2 Ns for the street. Im pretty sure that even the Cup 2 Ns are faster than the ZPs on the Corvettes lol.
09-20-2018, 05:30 AM
#124
Safety Car
The ZR1 performed VERY poorly. The Porsche's shorter wheelbase, lightweight and rear engine design can give it a small advantage, but not 4 second's worth.
Last time I was at Laguna Seca, I had my BMW MZ4 Coupe, my buddy has his BMW 340i. He had more power and torque, I had a shorter, tighter chassis. Both on street tires, he's on Michelin Pilot Super Sports, I'm on $75 per tire Federals (RSR-R). My car IS lighter by about 200 lbs, but he had significantly more torque and slightly more power. Our clean lap times were no more than 1/2 second apart. Had I brought my slicks I probably would have been about 2 seconds faster.
Not 4 seconds. That's a freakin' eternity on track. That's almost getting your @ss lapped in a 30 minute sprint difference.
Last time I was at Laguna Seca, I had my BMW MZ4 Coupe, my buddy has his BMW 340i. He had more power and torque, I had a shorter, tighter chassis. Both on street tires, he's on Michelin Pilot Super Sports, I'm on $75 per tire Federals (RSR-R). My car IS lighter by about 200 lbs, but he had significantly more torque and slightly more power. Our clean lap times were no more than 1/2 second apart. Had I brought my slicks I probably would have been about 2 seconds faster.
Not 4 seconds. That's a freakin' eternity on track. That's almost getting your @ss lapped in a 30 minute sprint difference.
09-20-2018, 05:45 AM
#125
Per Shank, all of the cars had multiple sets of tires an engineers. Porsche just had faster ones. I'm thinking Randy on kill mode might be a bit faster. Say, if Porsche hired him for a private test. I get your jist, the tires have been secret sauce and by the time the public has them to evaluate and compare, the GT2 and GT3 RS's will have over performed in all the mag that tests. As of last I checked, owners can't even get the tires yet.
Tire tides change, it's part of the game. Porsche had fastest in the early 2000's wihh the first streetable factory rcomp cup tires. Then Nissan had some sneaky fast ones, then Corvette on the C6 ZR1 and Z07/Carbon, then Ferrari and Camaro with Trofeo R, then Viper with Khumo V720 and now Porsche again. It's cyclical. Someone will always have a tire advantage. I have no explanation for why they had two different sets of tires. But all the rumors point to these CupR being extremely fast. We know the Viper tires are Hoosier fast for sure, at least for a few laps. If it's faster than those, it says a lot.
Speaking of which, beating the ACR at VIR on lesser tires is quite an accomplishment. Not quite the drubbing Mero gave the Acr on the main course, but impressive nonetheless.
Tire tides change, it's part of the game. Porsche had fastest in the early 2000's wihh the first streetable factory rcomp cup tires. Then Nissan had some sneaky fast ones, then Corvette on the C6 ZR1 and Z07/Carbon, then Ferrari and Camaro with Trofeo R, then Viper with Khumo V720 and now Porsche again. It's cyclical. Someone will always have a tire advantage. I have no explanation for why they had two different sets of tires. But all the rumors point to these CupR being extremely fast. We know the Viper tires are Hoosier fast for sure, at least for a few laps. If it's faster than those, it says a lot.
Speaking of which, beating the ACR at VIR on lesser tires is quite an accomplishment. Not quite the drubbing Mero gave the Acr on the main course, but impressive nonetheless.
As for the R being as fast or faster than the ACR Kumhos....I'll be damn if thats actually the case lol.
09-20-2018, 06:18 AM
#126
https://www.evo.co.uk/features/16996...ested-on-track for reference.
09-20-2018, 06:50 AM
#129
09-20-2018, 02:19 PM
#130
Here is the Sport Cup 2 R:
Here is the Sport Cup 2:
Even without that, the car is just brutally fast. Here's an Evo test where all cars had the Cup 2 (non R) and the GT2 RS smoked everything. https://www.youtube.com/watch?v=Wsv4u2rwj0c&t=806s
https://www.evo.co.uk/features/16996...ested-on-track for reference.
https://www.evo.co.uk/features/16996...ested-on-track for reference.
Last edited by BrunoTheMellow; 09-20-2018 at 02:21 PM.
09-20-2018, 03:27 PM
#132
Burning Brakes
The Senna should just about rape anything (street legal) on a track, including the GT2RS. It's 200 lbs lighter, at least 100hp more and of course more downforce. McLaren doesn't mess around, and with the Senna name I'm sure the car will deliver. Imagine P1/918 fast in a straight line but can actually take a turn as well...Should be BRUTALLY fast. IMHO.
Last edited by ZoratZ06; 09-20-2018 at 03:28 PM.
09-20-2018, 04:07 PM
#133
So we have pictures of tires...thats great. So what now? Are you going to decode the compound underneath over the picture?
09-20-2018, 04:10 PM
#134
Laguna Seca, located just a few miles off shore in Monterey, CA, RARELY gets above 80º even on the hottest of days. In fact, I've been to the track in the middle of July and you have to wear jackets in the morning. It warms up to mid 80s on occasion, and can have drastic weather changes (I was there one time where it went from fog, to rain, to HAIL, to blistering sunshine all within 35 minutes, and different parts of the track had different weather, i.e. SUNNY on one side, raining on the other).
If HEAT is affecting the ZR1's track time, it's more likely that it's too COLD if it's an early morning session where the tires needed heat to grip. IF you're saying the ZR1 was pulling timing due to heat? Then we should all be afraid, because I can virtually guarantee you that the ambient temps never got above 85º.
09-20-2018, 04:54 PM
#135
Are you suggesting that the ZR1 is that slow due to HEAT?
Laguna Seca, located just a few miles off shore in Monterey, CA, RARELY gets above 80º even on the hottest of days. In fact, I've been to the track in the middle of July and you have to wear jackets in the morning. It warms up to mid 80s on occasion, and can have drastic weather changes (I was there one time where it went from fog, to rain, to HAIL, to blistering sunshine all within 35 minutes, and different parts of the track had different weather, i.e. SUNNY on one side, raining on the other).
If HEAT is affecting the ZR1's track time, it's more likely that it's too COLD if it's an early morning session where the tires needed heat to grip. IF you're saying the ZR1 was pulling timing due to heat? Then we should all be afraid, because I can virtually guarantee you that the ambient temps never got above 85º.
Laguna Seca, located just a few miles off shore in Monterey, CA, RARELY gets above 80º even on the hottest of days. In fact, I've been to the track in the middle of July and you have to wear jackets in the morning. It warms up to mid 80s on occasion, and can have drastic weather changes (I was there one time where it went from fog, to rain, to HAIL, to blistering sunshine all within 35 minutes, and different parts of the track had different weather, i.e. SUNNY on one side, raining on the other).
If HEAT is affecting the ZR1's track time, it's more likely that it's too COLD if it's an early morning session where the tires needed heat to grip. IF you're saying the ZR1 was pulling timing due to heat? Then we should all be afraid, because I can virtually guarantee you that the ambient temps never got above 85º.
09-21-2018, 04:11 AM
#136
It would be interesting to compare what the max speed attained on the front straight between a C7 Z06 versus this C7 ZR1 is.
09-21-2018, 06:55 AM
#137
Safety Car
Are you suggesting that the ZR1 is that slow due to HEAT?
Laguna Seca, located just a few miles off shore in Monterey, CA, RARELY gets above 80º even on the hottest of days. In fact, I've been to the track in the middle of July and you have to wear jackets in the morning. It warms up to mid 80s on occasion, and can have drastic weather changes (I was there one time where it went from fog, to rain, to HAIL, to blistering sunshine all within 35 minutes, and different parts of the track had different weather, i.e. SUNNY on one side, raining on the other).
If HEAT is affecting the ZR1's track time, it's more likely that it's too COLD if it's an early morning session where the tires needed heat to grip. IF you're saying the ZR1 was pulling timing due to heat? Then we should all be afraid, because I can virtually guarantee you that the ambient temps never got above 85º.
Laguna Seca, located just a few miles off shore in Monterey, CA, RARELY gets above 80º even on the hottest of days. In fact, I've been to the track in the middle of July and you have to wear jackets in the morning. It warms up to mid 80s on occasion, and can have drastic weather changes (I was there one time where it went from fog, to rain, to HAIL, to blistering sunshine all within 35 minutes, and different parts of the track had different weather, i.e. SUNNY on one side, raining on the other).
If HEAT is affecting the ZR1's track time, it's more likely that it's too COLD if it's an early morning session where the tires needed heat to grip. IF you're saying the ZR1 was pulling timing due to heat? Then we should all be afraid, because I can virtually guarantee you that the ambient temps never got above 85º.
Edit:
See this quote from Motor Trend.
We were ready to lap the ZR1 at the end of day one at WeatherTech Raceway, but the Chevyteam begged for a morning run in the cool, dense air.
Clearly they had driven the car most of the day already doing subjective testing. The car would have been hot enough to dial back timing at EOD.
The gun is smoking heavily.
09-21-2018, 10:03 AM
#138
Le Mans Master
I'm guessing the result is a combination of all these things.
Last edited by village idiot; 09-21-2018 at 10:05 AM.
09-21-2018, 10:23 AM
#139
CUP 2 R tires have the capital R after CUP 2 clearly "boldened". The street-able version of the tire is still not available on this side of the pond...
09-21-2018, 11:21 AM
#140