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^^^^^^^^^^ This may be an interesting discussion from an academic standpoint, but it almost certainly has nothing to do with the Z/28’s Ring lap time. The video proves that the silver Ring car did NOT have a full roll cage. Furthermore if you Google “Z/28 Nurburgring Pictures” all you get...

Nonsense. I’ve driven a street car at speed on the Nurburgring, so I know exactly what is involved. While extremely challenging, the Ring is not so radical a departure from good US road courses that it materially exaggerates the performance benefits of a roll cage installation.

The fact that there is no tubing running along the A pillar and no tubing running across the top where the roof meets the glass tells me that this car did not have a full cage installed. At most it would have had a roll bar, likely with 4 attachment points. Pill is right that installation...

Why don't I see any cage elements on the in-car video from the 7:37 Nurburgring run? Do you have any pictures or details showing what cage, if any, was run at the Ring?

I could have been more clear. Barber does not have a configuration called the "Club Course" although they do have configurations used for club events. Mid Ohio does have a configuration called the "Club Course" which is .15 miles longer than its "Pro Course" and frequently causes the kind of...

I'm interested in that answer as much as you are. If you find out definitively please let us know.

I never said no club racing occurred at Barber. In fact earlier in the thread I posted club race results from last month’s NASA race. What I said was there is no “Club Course” at Barber like there is at Mid Ohio. At Mid Ohio sometimes they race on the Club Course and sometimes they race on...

I don’t call it tampering. I call it normal procedure for tracking any car. I check and adjust my tire pressures immediately before going out on track and immediately after I come off. 100% of the time, no exceptions. It’s a safety issue, and an economic one. If the pressures are too...

I disagree. The focus of the article was on the Z/28 and that information was added to the article to create a dramatic twist, not to explain their procedures. Stupid on their part because it does raise legitimate questions. Sounds like a good Letter to the Editor question.

No it doesn't. It means "I think I know where to find some more speed." I call BS on you having any racing experience. If you can prove that they never made an effort to get a good hot pressure on the Nissan or the Porsche then I'll call BS on this test.

Look at the map! The bypasses cut the track in half. How the hell do you get a 2.27 mile configuration from those bypasses? Are you sure you really ever been to a racetrack?

There are bypasses that divide the track in half. There is nothing that yields a 2.27 mile configuration. It sounds like you think there's a Pro Course/Club Course situation like Mid Ohio. There isn't.

R&T's lap time is irrelevant as it was turned by a journalist and not a pro driver. Do you think you could hustle the car around the track as fast as Randy Pobst or Andy Pilgrim?

I don't care want MT's map says. There is no 2.27 mile configuration at Barber. Do you think they cut through the infield or something? Regarding pressures, if they never put a gauge on the Nissan or the Porsche then the test is BS. I just don't see any evidence of that in the article.

That really would be ridiculous if they weren't planning all along to come in and bleed the pressures down before going back out. Clearly the same tire pressure procedure should be used on all cars in the test. Randy obviously understands that, and I would certainly hope the MT guys do too.

Why are you still talking about "full course" and "shortened track"? All the testing was done on the full 2.38 mile course. MT had a typo on their track map. There is no 2.27 configuration at Barber.

Not strange at all. Street pressure and track pressure are two very different things. I would expect that the testers received the car with appropriate pressure for the street, given that street driving was part of the test. On the track pressures will rise anywhere from 6 to 10 lbs, so...

Details? Type of 911? Class, mods, etc.? So you’re planning to go racing? Great! HPDE (not really racing), time trialing, or real W2W racing? What organization and class are you planning to run? I look forward to hearing about your experiences, especially if you’re planning to use a...

You must have missed it. Pobst did a 1:36.17 for Motor Trend, and Andy Pilgrim did a 1:36.29 for Autoweek. From the pictures it looks like Motor Trend did their laps in a silver car and Autoweek had a red car. Sorry you wasted so much time on this analysis, but the 2.27 is a typo. There...

Not surprised you're still unable to read and understand a motorsports rule book. It very clearly says the the 2014 Z/28 is allowed to run in T1-LP which is essentially the T1 class subject to the T2 prep rules per rule 9.1.9.1. It even lists OEM specs for 2014 Z/28 including engine specs...