3-Pedals

Are you saying his videos were not real world? Also keep in mind, the tires have improved between 2017 when they were developed for hero laps vs now. They are not the same tire. The test no one wants to show is having same wheel/tire (incl unsprung mass) on both these cars and seeing how much better the new car is.

ipse dixit

No, he's saying that video is worthless.

GrantG

I think you may be selling the Cup2R a little short (at least when new), but it’s also worth noting that the Corsa is considerably slower than the regular Cup2. Corsa is almost like the “comfort” option for those who wish the GT3 and RS had a PS4S option.

3-Pedals

Do we know which corsa this was?

MaxLTV

Laguna is an odd track - mostly slow-ish point-and-shoot corners and a long uphill dragstrip of the main straight, so it rewards power more than anything else. Look at Taycan GT, a 1108HP led whale that beat all the RSs and is only 0.25s off McLaren Senna. So I'm not surprised by the good performance of McLarens there - their power-to-weight is far superior. It also gets very dusty and even sandy on some days, so traction varies a lot, making any comparisons across days hard. As for RS vs RS - Corsas are the slowest tire for the RS and about 0.4-0.5s per minute slower than regular Cup 2 (not even R), so no surprise there too.

GrantG

I assumed the one that is original equipment on GT3 and RS

groundhog

Thats great, on CUP 2R, with me driving - the difference between the 991.2 GT3 RS, 992 GT3 RS and 991 GT2 RS was ~1 second (same day, within 1 hour, track temp low 20's degrees celsius, the 2RS being quickest, the 992 GT3 RS about .3/.4 slower than the 2RS and the 991.2 GT3 RS being .6/.7 slower than the 992 GT3 RS, circuit would be rated as slow with average speed 135 kmh, peak speed 235 kmh, all cars fitted with timing dorians, the track is ~ 1.30 track). Perhaps I had an off day. Certainly was a fun few hours.

The Pilot Sport CUP2 have evolved quite a lot with time, which may in part explain your delta. I suspect the 2R a lot less, as they are a soft compound skim, with very different tread depth profile to CUP2.

Why don't you think the video is relevant? Its very much real world.

TRAKCAR

What video? I just wanted to share that my 992GT3RS completely stock on Michelin PSC2 is 4 seconds faster on a 2:10 lap then the 991.2GT3RS in OEM Michelins PSC2 it came with.
I'll add that I'm a pretty consistent driver but it wasn't on the same day, although very similar conditions.

Sure.

You're likely correct.

3-Pedals

You have a version of this that wont be very popular here I’m afraid.

groundhog

Yes, thats an interesting one.

One of things I learned from a lot of motorsport, is data doesn't lie particularly, when its hooked up to a video feed. Thats why 100hz logging is so important in picking up differences that can be used by the driver to improve performance. Often, there are quite large disconnects between what a driver says he's feeling and what is being shown by the data (A lot of motoring journalists are very prone to this - e.g. downforce on public roads when they are no where near the limit of grip). A more extreme version of this is in higher level dirt rallying where pace note variation can cause significant variation in stage times. Hence, many years ago the Swedes came up with the Jemba system that uses g force measurement calibrated to speed to link to map/corner calls - the reason the went instrumented was to get consistency e.g. "100 5R off camber tightening" is always called the same where ever it may occur, meaning the driver hits the corner at max speed consistently and with confidence.

Anyhow, at the of the day its just data or video and people will make of it what they will and as always a car doesn't make you fast, skill and training plus tires generally do. The good thing about the modern GT cars is they allow you to explore your skills and their limits in a relatively predictable way, something good for driver confidence.