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That depends, as mentioned above, on the track, radius and mostly the camber the track. I believe those tests are standardized in order to compare different cars.
I was hoping to improve all the g's at Road America, the virus messed up the season. Fast curves and some hard breaking.
Said another way, skidpads are a consistent way to compare cars against each other, but the numbers published are not necessarily the highest numbers a given car could achieve in a given turn on a given track (because of radius, camber, etc. as John stated).
in that video it never pulls more than 1.1g lateral tho.. which further makes my point.. I can't see how the car pulled the numbers you did... exceeds anything out there,
those are not pure lateral loads... that's inclusive of acceleration ... The way I understand lateral g skidpad ratings is that's the limit for pure side load before the car departs the road ..
Those phone sensors are not that reliable.
Interesting that I managed 1.24 on my prior car (991.2 base cab). AWD plays a role, but the improved chassis, SPASM, wheelbase and 18w seats are also major factors. It's quite capable and improved from an already great car.
We talk a lot about those lateral g's and suspension and chassis, but we shouldn't forget that the buck stops on the seats. The 18w seats on the 992 deserves a lot of praise, IMO, specially with a bad back.
One point I'd like to make is that I personally have quite low normal blood pressure readings, which to me means that I am more likely to have difficulty with high G-loads. I had no difficulty with the acceleration and braking G-loads that my 991.1 GTS generated. I believe I would have felt uncomfortable with lateral G-loads at 1.45 and above if they had been generated on a level surface, yet I had no difficulty at all in the 1.45-1.53 range per the G-Meter. More accurately, there was enough down load/pressure on my car to allow such a high measurement.
I think you may be confusing the affects of blood pressure on vertical and lateral G. Lateral G, which we experience to a minor extent in our cars has little affect. The affect of vertical G and blood pressure are more significant. Hence, the blood leaving the brain and people taking naps at inopportune moments. However, blood pressure is only one small aspect of g tolerance. Interestingly, even small amounts of negative G is not well tolerated by humans.
Here’s a great example of Vertical G, both positive and negative. It’s a workout.
This was last weekend while out for a BevMo pickup, stock alignment on OEM Goodyear’s, “normal” suspension mode. Unbelievable lateral grip for being such a comfortable street car.
I think you may be confusing the affects of blood pressure on vertical and lateral G. Lateral G, which we experience to a minor extent in our cars has little affect. The affect of vertical G and blood pressure are more significant. Hence, the blood leaving the brain and people taking naps at inopportune moments. However, blood pressure is only one small aspect of g tolerance. Interestingly, even small amounts of negative G is not well tolerated by humans.
Here’s a great example of Vertical G, both positive and negative. It’s a workout.
^Nice acceleration G force! I'm at 1.03, but I'm still running my winter Michelin Alpin tires. My 991 turbo cabriolet has a max acceleration G of 1.15, I think.
I don't have a pic, but I floored the car for the first time today since I put on a set of PS4S tires (315's on the rear) for the summer and I hit 1.08. I'm curious to see what I'll get using launch control, but I want to wait until I break my new tires in a bit first.
Second try. Same road, but it was a little bit later in the day and warmer (65° vs maybe 55-60°). I switched climate control off completely so my A/C wasn't running. And I had also just washed the car. Everyone knows cars drive better after a car wash. I swear my car feels faster now that I've been driving it harder. I think the ECU adapted or something.
Unbelievable amount of grip for street tires. This is on the factory Goodyear’s during a drive this morning on Highway 9 in Northern California. Love this car.
05-13-2020 | 12:15 AM
