GrantG

Wow, so GT3 is faster with 163 hp less and about 300 ft-lbs torque less. Big advantage from the 9k redline and the very close and low gearing 7 performance ratios allow. Weight is fairly similar.

ALLANB

Would think stuff like this is highly dependent on driver. And not sure how repeatable it would be in multiple runs.

The gt3 seems like a great car but is like 50k more than the z06 is supposed to be fully loaded. So is it really worth the extra money?

As said personally would buy couple year older cars and save a pile of money. Few year old GT3 and few year old c7 z06. Racing these car on track sounds like a very expensive hobby.

Lavender

This is another test. I clearly saw the 20 spokes @ their video @ track.

GrantG

I don't know any reason why it wouldn't be repeatable. If anything, GT3 is pretty consistent lap after lap. But I agree that it's certainly no bargain.

But pretty impressive for a naturally aspirated 6-cyl that is pretty heavy (weight around 3,300 pounds). RS model coming soon will be lighter, faster, and even more expensive...

raj

If you're referring to the 991 GT3, its curb weight is 3197 pounds (C&D test), so it does have a 150 lb advantage on the ZR1. Nevertheless, beating a cup-tired ZR1 around a lap is no mean feat - clearly neither the 458 nor the 12C can manage this despite even superior power-to-weight ratios and mid-engine layouts. Given that all factory street-going 911s understeer at the limit, I suspect that the rear wheel steering on the new GT3 addresses this tendency and helps the car rotate more easily. Would be useful to know if that article commented on this behavior.

Lavender

Okey folks lets put that to rest now shall we? :





Play the video@ HD. Scroll up to 2:39 and click "FullScreen" and tell me what are you seeing:

I for one am not seeing any Cup Wheels nor Cup tires.

GrantG

Unlike other 911's, all GT3 generations have always come with user-adjustable front and rear swaybars (multiple attachment points for the drop-links) that allows a large number of settings to adjust the handling balance from under-steer to over-steer, or anywhere in-between.

That being said, I'm sure the RWS does help with low-speed understeer in sharp corners and provides better high-speed stability in fast sweepers.

05dsom

^^obviously not the cup wheels but how can you tell from those dark shots @ 2:39 that those are not cup tires?

I can't see the tread (or lack thereof for the cups) in any of the shots...I have both sets of tires for my car and it is easily discernible if you can see the outer tread edge, but I cannot.

05dsom

^^ true. that is what most of the press reviews have commented on...that the usual Porsche understeer is GONE!

Lavender

Those tires does seem like PS2s to me. Ive seen a ZR1 and a Z06 with Cup Wheel/tires..

I did screenshot and when I enlarged it on my 28' it sure doesn't seem as small as the Cup tire. Also..I'm not aware of any other mag that tested a 2012 ZR1 with Cup tires mounted on the 20spoke wheels...

Guibo

I didn't say it was the same test. It was probably the same test car. Tires are not specific to only one set of wheels, are they?

Your video didn't put anything to rest. There is not enough resolution there to conclude that those were PS2s. This page clearly does have enough resolution:

Lavender

Okey I found a definitive proof this time

http://img703.imageshack.us/img703/3124/71849399.jpg

http://img850.imageshack.us/img850/3073/47898166.jpg

You can clearly see the tags @ ZR1 @ first picture. This the same ZR1 used @ MM test `round Magny Cours. You can see the tag @ 0.08 sec @ video I provided. When you click on the picture @ down left corner you'll see a little chassis like thingy. There it clearly reads " Michelin Pilot Sport PS2".

2nd Picture shows the same 458 as the one found @ MM test.

I took those pics from Autobild.

Cheers

Lavender

Yeah well the tires are PS2s. I have already provided pictures and a proof.

Nice try. Now...back @ ignore.

Guibo

Your ZR1 picture in the AutoBild test is too small to tell anything. Post up the screenshot of what you're seeing at 0.08 sec.

Guibo

Same 458 in the AutoBild test was faster than the ZR1 (on PS2) by 0.75s. Now in the MotorSport test, the ZR1 (still on PS2) is 0.83s faster, and faster than even the MP4-12C, which in your vaunted Motor Trend results was faster than the ZR1 on PS2. This ZR1 on "PS2" was likewise faster than the Z06 w/Performance Pack despite it being slower in the Motor Trend test than the Z06 so equipped.
Motorsport Magazine can somehow get the tire right for the Porsche (denoting Porsche-specific Cup+ tires of the 997 generation), yet they can't get it right for the ZR1 (specifically denoting non+ Cups). Both scenarios seem unlikely.

And you did not "take those pics from Autobild." You took them from Germancarforum where they were originally posted (with that same image link).

jacked boy

GT3 all the way. New Z is a major leep forward but still lacks the persona of a GT3. Those that hate on P cars most likey never tracked one.

ChucksZ06

I have never tracked one but I have passed them on tracks because they were going slower than my c5z...corner speed and straights.

GrantG

And I have blown by ZR1's in my 73 911 (modified). That doesn't tell the whole story. You need to swap cars - driver is often the biggest variable...

jacked boy

that is SO true...i am sure that a pro driver in a maita would smoke a squid in a million dollar super car. that statement tells me alot about his track experience.

05dsom

Is your C5Z stock?
This was a GT3 you passed? That is the OP question, GT3, not a base 911.
997.2 was 435hp, 30 more than your Z.