911SVettVU

OK, below is Road & Track's 2017 Performance Car of the Year Review. You've probably already read it. I have enjoyed reading these reviews since I bought my 2012, 991, 911S. Very interesting comparisons by experience people/drivers. But this years review creates a question I'd like your advice on.



http://www.roadandtrack.com/car-cult...r-of-the-year/



The analysis of each car includes a category called "Roadholding." See the insert box of car data on about page 5, second from the bottom row of data. I believe this data reflects lateral acceleration results. The Porsche Turbo S data is listed as 1.07g's.



Here is my question... my car has a lateral acceleration gauge. Last time I was at the Sonoma Raceway for a Track Day I re-set my G-meter gauge to zero prior to the day. When I returned home at the end of the day I checked the max left and right g's from the day: 1.21 and 1.22. How can my measly 911S develop more "Roadhold" than a Turbo S or any of these other cars? Maybe I'm just a really good driver! (Yeah, right!) Well, OK, maybe there is another explanation. But what? Calibration of instruments used? Different measurement?



What are your track-day experiences?

Thanks, Gene

Code

I believe when they do the tests its on a flat surface, and then drive in a circle until the tires lose traction. On a track you can hit banked turns and such which allows for greater g-force than on a flat surface.

subshooter

Your answers are here: https://rennlist.com/forums/991/9604...-g-meters.html

sgroer

Dirac

1.74!!

Who T-boned you?

Code

Damn!

mwar99

My guess - downhill into uphill corner at AMP (forget the number, 10 maybe?). Lots of grip in that one!

Homeles

When I drove the GT3 at the Porsche Experience, it showed 1.5/1.6 at the end of the day.

subshooter

Perhaps this is from the Kick Plate? Spinning off and hitting the high friction surface?

Homeles

I don't know. Was having too much fun to check it. The instructor implied it was on the road course.

911mhawk

2012.5 991s
MPSS street

Bry5on

Is there any way to turn this feature on in the 991.1 without sport Chrono? It was fun in the previous cayman GTS.

For more fun, a Cayman photo during break in from Latigo Canyon in LA:

Gus_Smedstad

The physical G-force sensor is part of the Sport Chrono package. It's not something you can just "turn on" since the sensor isn't there.

chris2

This thread made me check mine, didnt even know there was a history.

mazeroth

991.1 Turbo S. BTW, super jealous of the 1.5 braking G's! What tires?