Vs Car and Driver - Corvette ZR1 vs 997.2 Turbo PDK

[TMCCL65]

By 128 mph, isn't the ZR1 about 30 meters behind?

That might be true if both cars are doing a standing start. However, I know a guy who owns a ZR1 and ran a 10.79s 1/4 mile at 132.88mph in a bone stock (including tires). My friends witnessed it. The owner can flat out drive and has an incredible collection of cars that he tracks (996 GT2, ZR1, Ford GT, Viper ACR, GT-R and older muscle cars).

Tom

 

[lambornima]

wow @ braking figures.

im really skeptical of the porsche's numbers. not surprised 0-60 and them, but id like to wait and see what owners are able to trap in the 1/4 mile. highly doubt that unless the power is hugely underrated, that the 997 would trap as high as a ZR1. trap speeds are functions of power and how much wheelspin a car gets off the line. the porsche, even with its pdk, shouldnt really be able to trap as high as a ZR1 and 8 mph over the older Turbo (keep in mind that the 997.1TT tiptronic was no slouch off the line either!)

 

[Beemer B773ER]

Ok.. so the Porsche has the Vette beat in a straight line (though the Vette closes in after its sluggish start). It's a Porsche, so kick-ass track performance comes standard... so how the heck did the Vette beat it around the track?

Is it because of the track layout, or something more ?

(Not complaining or flaming the Vette, just totally impressed by HOW GOOD this car is. It doesn't just compete, it beats them!)

 

[Sunny]

Ok.. so the Porsche has the Vette beat in a straight line (though the Vette closes in after its sluggish start). It's a Porsche, so kick-ass track performance comes standard... so how the heck did the Vette beat it around the track?

Is it because of the track layout, or something more ?

(Not complaining or flaming the Vette, just totally impressed by HOW GOOD this car is. It doesn't just compete, it beats them!)

If you read the comments , it says Porsche was actually faster on the curves too, so I am guessing it is slower cause in gear acceleration must be slower.

 

[go0gle]

Ok.. so the Porsche has the Vette beat in a straight line (though the Vette closes in after its sluggish start). It's a Porsche, so kick-ass track performance comes standard... so how the heck did the Vette beat it around the track?

Is it because of the track layout, or something more ?

(Not complaining or flaming the Vette, just totally impressed by HOW GOOD this car is. It doesn't just compete, it beats them!)

I wonder if hp/weight ratio plays a role in the overall laptime ?

2.4 kg per HP for the ZR1
3.2 kg per HP for the 997

I really want to see what the 458 Italia can do against these two

 

[coolraoul]

If you read the comments , it says Porsche was actually faster on the curves too, so I am guessing it is slower cause in gear acceleration must be slower.

In any decently run universe, an AWD Porsche 911 should properly murder an RWD 'Vette.
What happened?

That siad, the ZR-1 has a monster of a motor, so it surely did jump from corner to corner like ther's no tomorrow, but still...

Bow Down to GM for the astounding C6 'Vette!!! And the 991 Turbo can't come soon enough...

 

[martinbo]

The Bridgestone RE050A is an all weather tyre. This is not to say it is a snow (or more precisely winter) tyre which is a very different thing altogether.

 

[hilalpro]

@ hilalpro: Just make it clear. For you. AutoBild Sportscars did test the 997.2 Turbo in that snow-comparison on Pirelli Sottozero Winter tyres (the other cars were used winter tyres as well). There is the normal, summer-Bridgestone tyre in the datapanel, because they measured those data (for example 0-100 km/h in 3,3 s) with that tyre on dry surface. Of course.

...and AMS tested the cars on snow with winter-tyres as well. Better look/read carefully next time.

you said it "the other cars were used winter tyres as well" all that to make the comparison fair and for nothing else but those are standard Bridgestone on snow when ABHD tested it, find excuses again

 

[coolraoul]

Okay, I think it's enough on the matter. Please. This is not a tyre-comparison thread.

 

[DeDe]

Okay, I think it's enough on the matter. Please. This is not a tyre-comparison thread.

Agreed. I just wanted to make things clear, I don't like distortions.

Back to thread: I can't wait for a proper head-to-head comparison between these supercars: R8 V10, M6, Z06 and 911 Turbo. All four cars are around 500 hp. It will be an awesome comparo. I think the ZR1 is a bit "more" than a 911 TT.

 

[CarGuy]

That 142 feet braking distance for the Vette is impressive..haven't seen a number like that in a while!

They are much closer than it seems....pretty much same acceleration, cornering grip and skidpad, but the Vette is gonna be a much more rewarding drive. Taming this is much more difficult as opposed to a GT-R or 911 Turbo. I don't think anyone interested in a ZR1 would be in a Turbo but more in a GT3/RS/GT2 version. I am still amazed at Turbo's acceleration numbers with this transmission and being some 138 horse and 190 lbs down on the Corvette. That rear engine 38/62 bias really is working well as opposed to the Vette's 52/48. If they can give the Vette a proper launch control it coulda beat the Turbo to 150 by at least a second or two.

 

[DeDe]

That 142 feet braking distance for the Vette is impressive..haven't seen a number like that in a while!

Those Ferrari FXX-brakes at the front really know their job.
@ acceleration: AutoBild Sportscars did 3,2 seconds 0-100 km/h with a stock ZR1 last year.

 

[Guibo]

Something to keep in mind is that the test figures except the laptimes were not done on the same day. The ZR1 figures were from a previous test. I think even the location could be different. C&D tests in the midwest and in California.
That being said, I do think the results would be pretty similar regardless: The Turbo getting the better acceleration off the line with the ZR1 taking over at higher speeds.
My guess is that for average drivers from almost any speed below 50, and particularly from a dead stop, the Turbo will be so far ahead it might be beyond practical for the ZR1 to finally pass it. Even more so on real-world roads that aren't quite as perfect as a test track; even on the track, the ZR1 has grip issues.
And the same goes for the racetrack. They noted the Turbo was easier to drive than the ZR1. The 997.1 Turbo was something of a handful, with unpredictable swings between over and understeer, which some thought might be due to an underdeveloped AWD system. But the new car is still rear-engined, so that says something about how far Porsche have come with this car.

Re: tires
A Porsche engineer speaking to Excellence Magazine (Porsche enthusiast mag) noted they have tested extensively with Bridgestone for these Porsche-specific tires. He said the grip is not all that far off from a Cup tire. Now, the 997-generation Cups (some are Cup+) are said to be different from earlier generations (harder, longer-wearing, with better wet-weather performance), so the gains in dry-weather traction could be minimal. Until a head to head test on the same car is done, we won't know the true difference. Maybe a true off-the-shelf R-compound Cup tire is much better, but that wouldn't be stock anymore.
The ZR1's tires are ZP's, but they're also very grippy. Sascha Bert, driving the ZR1 around the 'Ring last year for AutoBild, said they were the stickiest road tire he'd ever driven. With the ZR1 capable of 1.12g sustained, that's believable. And probably has alot to do with that fantastic braking figure too. The PS2's developed for the Viper SRT-10 are also reportedly bespoke with a special compound.
In short, I think the tires are not that different from each other in terms of grip.

 

[Giannis]

I believe that this thread is named "Corvetter XR1 vs 997.2 Turbo PDK" and not "Bridgestone Potenza RE050A vs Snow"

Please, do not continue this discussion here. If you do want to debate about the RE050A tyre, you can create a thread in "The Pit" area, and I'll move the rest of the relevant posts there.

 

[Mr Robert]

Ok. That's it. We will not have another post regarding winter tyres in this thread. Feel free to start that discussion all over in another thread.

 

[hilalpro]

I can't wait for a proper head-to-head comparison between these supercars: R8 V10, M6, Z06 and 911 Turbo. All four cars are around 500 hp. It will be an awesome comparo. I think the ZR1 is a bit "more" than a 911 TT.

the zr1 is more of an gt2 rival than an 911 turbo

with that IMO the 997.2 turbo S with an power to weight ratio of 2.99 kg per HP will do the job just fine.

 

[CarGuy]

I see the ZR1 now as the best competition with the GT3 RS

 

[CarGuy]