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ZR1 at Motor Trends Best Drivers Car Test today at Laguna Seca

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ZR1 at Motor Trends Best Drivers Car Test today at Laguna Seca

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Old Yesterday, 02:02 PM
  #321  
Rinaldo Catria
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Originally Posted by NW-99SS View Post
*Non Ford-owned Multimatic built a decent looking carbon tub GT*
The GT is a terrific race car. Race car developer/builder Multimatic designed it to be such. Costs were of little concern. Chip Gnassi developed the racing version of the Eco boost engine over a multi year program in ALMS/IMSA P (prototype) class. The GT is pretty much a prototype race car that was later modified to meet street safety requirements. It was given a waiver to race before the homoligation rules were satisfied. Look inside the “cockpit” of a street model... most normal size driver and passenger shoulders are touching. Virtually no seating adjustment. Luggage capacity is approximatly one basket ball (behind the mid engine). If a ZR1 ranks a 5 of 10 for being a practical street car, the GT is lucky to be a 1 IMO.. that being said, Id love to have one in the garage with the ZR1.

Last edited by Rinaldo Catria; Yesterday at 02:04 PM.
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Old Yesterday, 03:30 PM
  #322  
Dave Schotz
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Originally Posted by BrunoTheMellow View Post
He's not a magazine but it's been done and the z06 isn't even in the competition anymore after removing the obvious tire advantage.

https://youtu.be/6ZbYTHWpJ-4
That is the spirit of what would help 'level the playing field'... which it clearly leveled the field for the Ferrari, Lambo & Mclaren, but they weren't able to run the same tire on the Z06 in that test. So for the first 3... I think that we can say the 675LT is the quickest. The Z06, while finishing last, was not on the Trofeo R's... it was on the Cup 2's. I do think it speaks somewhat to give more credibility to Randy's laps.. as Randy's gone 1:25 flat and their professional driver was 3 seconds slower. Not sure what sort of track temps/time of year they were doing the event. Their driver was also 2 seconds slower than Randy in the 675LT.

But I like taking the 'tire factor' out of the argument between those 3 for sure!

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Last edited by Dave Schotz; Yesterday at 03:33 PM.
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Old Yesterday, 05:06 PM
  #323  
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Originally Posted by Dave Schotz View Post
That is the spirit of what would help 'level the playing field'... which it clearly leveled the field for the Ferrari, Lambo & Mclaren, but they weren't able to run the same tire on the Z06 in that test. So for the first 3... I think that we can say the 675LT is the quickest. The Z06, while finishing last, was not on the Trofeo R's... it was on the Cup 2's. I do think it speaks somewhat to give more credibility to Randy's laps.. as Randy's gone 1:25 flat and their professional driver was 3 seconds slower. Not sure what sort of track temps/time of year they were doing the event. Their driver was also 2 seconds slower than Randy in the 675LT.

But I like taking the 'tire factor' out of the argument between those 3 for sure!

Best Regards,
Dave
Well the Trofeo R should not be any faster than SC2 ZPs. It has been stated time and time again that the SC2 ZPs are absurdly fast. That's why the AMG GTR went to it. That's why the GT2RS went to it (I doubt it's really any different other than not having the ZP sidewalls).

Removed rest of post due to dumb dumb misinformation provided by me.

Last edited by BrunoTheMellow; Yesterday at 09:28 PM.
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Old Yesterday, 05:35 PM
  #324  
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Originally Posted by BrunoTheMellow View Post
Well the Trofeo R should not be any faster than SC2 ZPs. It has been stated time and time again that the SC2 ZPs are absurdly fast. That's why the AMG GTR went to it. That's why the GT2RS went to it (I doubt it's really any different other than not having the ZP sidewalls). I trust tire rack test results to good extent:

Sport Cup 2: 9.3 Dry traction, 5.6 Wet Traction
Sport Cup 2 ZP: 10.0 Dry traction, 3.0 Wet Traction
Trofeo R: 9.2 Dry Traction, 4.7 Wet Traction

It's obvious the Sport Cup 2 and Sport Cup 2 ZP shouldn't share a name, they aren't even close to the same tire. Hell if Tire Rack tests a tire better than the SC2 ZPs, they will have to adjust their scale as it's maxed out.
Those are not tire rack test results....
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Old Yesterday, 08:31 PM
  #325  
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Default Surveys likely skewed! ;)

Short term optimum characteristics mostly inpercieveable on the street.
Functional characteristics transcend much better harder compounded which would give an overall better appearance.


Test!^^^^^^

Last edited by johnglenntwo; Yesterday at 08:33 PM.
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Old Yesterday, 08:43 PM
  #326  
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Originally Posted by heavychevy View Post
The Z06 was on cup 2 and the other cars on trofeo r. Trofeo r are faster.
Ha ha....that's exactly what I took away from this "test"......too bad the Vette wasn't on the Trofeo R's. Time for somebody to step up and do this type of test with Hoosier's and call it a day.

The ringer tires used at the Ring and other "shootouts" is just a joke. Although compound matters, belt design and sidewall design is very important for a race tire. A lot of belt designs and sidewall designs might not even meet manufacturers minimum requirements for street driving or DOT certifications but they are bloody fast on the track and can handle the G forces, downforce and braking energy available from cars like the ZR1, ACR-E and GT2 RS.

I think Dodge got it right with the Demon......If offering a maxed out performance car that is marketed for track duty, why not offer a set of wheels and R-compound type tires as an option for $1.00 or some dollar figure to make it legit and "factory built".
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Old Yesterday, 09:16 PM
  #327  
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Originally Posted by Telepierre View Post
Those are not tire rack test results....
Oh shoot are those consumer ratings?? Darn. Fooled me.

I still stand by the fact that the trofeo Rs are not faster than sport cup 2 zps

Last edited by BrunoTheMellow; Yesterday at 09:20 PM.
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Old Yesterday, 09:26 PM
  #328  
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Only that's not a fact......

Why do you think Michelin came out with the Cup 2 R?

Response to competition. Trofeo R have been going faster than cups on many different platforms for years now. And you have the Kumhos, which are also significantly faster. If Michelin wants to continue to be the tire of choice, they had to make a less compromising tire, and the cup 2 r is it.

You need to do more research before you state things as fact.

Last edited by heavychevy; Yesterday at 09:29 PM.
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Old Yesterday, 09:32 PM
  #329  
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Originally Posted by BrunoTheMellow View Post
Oh shoot are those consumer ratings?? Darn. Fooled me.

I still stand by the fact that the trofeo Rs are not faster than sport cup 2 zps
Without seeing what you're looking at to pull those numbers it's tough to be sure, but they look a lot like the "owners survey rating" for tires that tire rack has...
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Old Yesterday, 09:49 PM
  #330  
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Originally Posted by CPhelps View Post
Without seeing what you're looking at to pull those numbers it's tough to be sure, but they look a lot like the "owners survey rating" for tires that tire rack has...
Yep. I just figured it was from their tire tests. Then I looked and found no tests for those tires.
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Old Yesterday, 10:12 PM
  #331  
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Excerpt from C&D Lightning Lap 2014: https://www.caranddriver.com/feature...p-2014-feature
"Read the sidewalls of the Z/28 and you’ll discover that there’s more tire on the front of this Chevy than on any other production car, ever. Those 305/30ZR-19 Pirelli P Zero Trofeo R tires are fixed to 11-inch-wide wheels that stand proud of the front fenders. In addition to providing steady grip lap after lap, the exotic Trofeo Rs are what allow the Z/28 to match the 918’s Turn One grip. The Ferrari engineers sent to baby-sit the F12 suspected that the Camaro wore “funny” tires. But they’re standard-issue Z/28 rubber and were instrumental in getting the Z/28 to within a tenth of a second of the F12’s lap time. The Ferrari guys probably didn’t consider that at all funny."
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Old Yesterday, 10:30 PM
  #332  
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Default GM allowed tire invalidation! :0

They new it would catch up to them.
No 2020 ZR1!
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