[Mahler9th]

First, I am sorry that you hurt your car and that you were hurt. I hope that you mend fully without too much discomfort and hassle. And that your car gets fixed without too much cost and hassle.

Now some observations in no particular order...

1.I don't know how much experience you have with those tires. Scrubbing back and forth like that as you head on the track does little in my experience, unless you have a bunch of easy-to-get-off crud on the tires. When I move back and forth on an out lap, it is for nearly the entire lap, and I do some things like drive really side ways in certain corners to help further build some temp and get rid of the crud. This is my experience with slicks. I did not see anything in the video that suggested you did much to get heat into the tires. Just an observation.

2. The camera seems well placed, but I think it would be helpful if you had a brake light indication somewhere in the FOV. Even with data acq, I am a believer that a brake light in the FOV is helpful. I have both a brake light and a WOT light in my car in the camera FOV.

3. It never looks like you are working the tires in the video. I see no real corrections like you are getting anywhere near their limits and using their grip. I am not sure why it appears that way, but generally it looks to me like you were not "up on the tires" at all.

I might expect this in the early laps with a new car build after not having driven for a while. That would be good judgment building up confidence in the car and learning its behavior in an effort to learn its pluses and minuses.

Given a cautious step-by-step approach in terms of cornering speed in general, some would also take late apexes-- that is later than the proper apexes for the corners. I do not know whether you were doing this or not. I think going late as you are building experience with a new car is important, especially with a turbocharged car. No matter what gauges and data tell you, you have to get a feel for boost. It is different in different gears. Ask me how I know... (3rd gear boost oversteer in a slow corner at Laguna Seca).

4. More on the car... I do not remember what type of seat you have, but I can see a lot of your back/shoulder, and that is unsettling. And as mentioned, a head and neck restraint is likely prudent.

5. To me, it looks like you are taking a too early apex, with cold tires and in a situation where you could get a somewhat sudden infusion of power from boost curve climbing. The rear tires seem to say, "No thank you... I cannot accelerate and corner based on these input data. My performance limits are exceeded and I will now give up all grip."

Sure, it could all be a handling/suspension deal, but I personally doubt that unless your car is vastly different from other 951s with which I have had experience. You have to make sure you have enough suspension travel and all of that... don't want to see a sudden infinite spring rate. But I'd expect other corners to reveal that...

That corner may be just a little like turn 1 at Thunderhill, but it is hard to say. I have only seen a few folks go too early at turn 1, but i did see a 993 GT2 factory turbo car suffer from not losing enough speed on entry and he wound up in the turn 2 worker box tires. His rear tires let go first with a "what, are you kidding? No way, see ya grip." One of our local guys was driving.

6. I am not sure what you could have done differently in terms of deciding what to do after the tires let go. I see a bunch of entry corrections and maybe there was a lift... but it is difficult to get a good recovery when you are going that fast... especially if the tires are cold and the car is somewhat unfamiliar and the driver is rusty. Obviously wet grass is no help.

One of my former students recently went early at a corner at Thunderhill... wet grass and soft ground caused lots of damage that wouldn't happen in the summer. He was in a new build and still learning slicks and I figure he went early, and maybe the tires weren't yet up. This was in a 911, which is much easier to drive than a 951.

Again, sorry about the accident, and hopefully you will be able to get back up and running quite quickly.