kick-off what is your g-power record?

[Alemany]

I had lateral at 1.1 turning right and .93 turning left with acceleration at 1.31 and stopping at 1.2 but the massive software update last July erased it. I now have 0.92/0.93/1.1 and 0.98. But soon Ill be back to the old numbers

Sponsored

 

[Caraholic]

So far the max I have been able to muster with a turbo on all seasons is 1.11 acceleration. Do sometimes regret not going turbo s

 

[gkondyl]

I own and MY22 4S Plus with 19” wheels and the numbers I was getting on acceleration was 0.78 G with launch control.
Today I drove the new 2025 model a 4S CT with 14 miles on the clock and I got an impressive 0.89G on a launch start.

HP on the MY22 is 571 and on MY25 is 598.
Weight appears the same 5-10kg give or take. How that difference is justified between these 2 models? Could my MY22 lost a bit of power?

 

[69Mach390]

I own and MY22 4S Plus with 19” wheels and the numbers I was getting on acceleration was 0.78 G with launch control.
Today I drove the new 2025 model a 4S CT with 14 miles on the clock and I got an impressive 0.89G on a launch start.

HP on the MY22 is 571 and on MY25 is 598.
Weight appears the same 5-10kg give or take. How that difference is justified between these 2 models? Could my MY22 lost a bit of power?

I know this is old but no one ever answered you.

The answer is “torque.” Horsepower is a factor of torque and gearing but torque is what moves you.

If you chart a Dyno torque curve and compare to G force acceleration, they will go hand in hand. The 2025 has more torque so will launch harder and more G force.

 

[whitex]

The answer is “torque.” Horsepower is a factor of torque and gearing but torque is what moves you.

Gearing can change the torque to whatever you want it to be, but not hp (assuming fixed motor rotation speed). Tractor-trailers have massively higher torque than any Taycan, yet they will not out-accelerate the Taycan.

 

[Vercingetorix]

There are old drag racing formulas for acceleration. All require hp and weight, no mention of torque.

https://robrobinette.com/et.htm

 

[69Mach390]

There are old drag racing formulas for acceleration. All require hp and weight, no mention of torque.

https://robrobinette.com/et.htm

Hp= tq x rpm/5252

Any mention of hp is a mention of tq.

Again, if you chart tq over rpm and chart G forces from acceleration they will go right over each other.

You can have two vehicles with identical peak HP and weight and have one accelerate much faster at low speeds than the other.

How? Increasing low end torque.

If a vehicle has a flat torque curve and the same HP and gearing as another one that has a very high peak torque at lower rpm that drops off…. The one with the downward sloping (high low end torque) will accelerate faster than the flat one.

And that explains why the 2025 4S has higher peak G forces and acceleration than a 2020-2024, despite only a little more peak horsepower.

TLDR; do this experiment in ANY car-

Floor it at peak torque RPM

Floor it at any other rpm including peak HP

You will FEEL the difference. Your fastest G forces and acceleration come at peak torque.

 

[69Mach390]

Gearing can change the torque to whatever you want it to be, but not hp (assuming fixed motor rotation speed). Tractor-trailers have massively higher torque than any Taycan, yet they will not out-accelerate the Taycan.

Put that motor in the Taycan with the same gearing as the Taycan and it absolutely WILL out accelerate the Taycan***

***To a very limited speed. They have 2000 lb/ft of torque.

The problem is that they red line around 2200 rpm.

So that drag race would be won by that big diesel….. to a max speed around 25 mph

To match the acceleration of the Taycan, they might gear it down 4X. Then the diesel would at least match the Taycan in acceleration to a max speed of 100 mph.

Simple question:

Identical engines with same gearing and same max rpm.

Engine 1- stock- 500 hp, 500 tq

Engine 2- added torque below 5000 rpm to boost to 700 tq, but then at higher rpm, identical tq as above stock engine and same peak 500 hp.

Which will accelerate faster?

 

[Vercingetorix]

Hp= tq x rpm/5252

Any mention of hp is a mention of tq.

Again, if you chart tq over rpm and chart G forces from acceleration they will go right over each other.

You can have two vehicles with identical peak HP and weight and have one accelerate much faster at low speeds than the other.

How? Increasing low end torque.

If a vehicle has a flat torque curve and the same HP and gearing as another one that has a very high peak torque at lower rpm that drops off…. The one with the downward sloping (high low end torque) will accelerate faster than the flat one.

And that explains why the 2025 4S has higher peak G forces and acceleration than a 2020-2024, despite only a little more peak horsepower.

TLDR; do this experiment in ANY car-

Floor it at peak torque RPM

Floor it at any other rpm including peak HP

You will FEEL the difference. Your fastest G forces and acceleration come at peak torque.

I’ll just leave this here.

 

[69Mach390]

I’ll just leave this here.

Those vehicles aren’t geared the same. Not even close. If they did, the diesel would accelerate faster (but have a much lower top speed).

The example you should have looked at is the 2025 Taycan vs the 2024.

Or other real world examples would be a Mustang GT with a roots style blower vs one with a centrifugal style blower.

They both make the same peak horsepower, same vehicle, same gearing, but the roots style makes more boost at lower rpm’s (by design) and more torque and is significantly faster at lower speeds.

FWIW, I own a Mustang GT with a centrifugal style blower. I think it’s more fun even though it’s slower.

An even better example is the 2024+ Mustang Mach E GT with and without the performance upgrade.

Both have 480 peak hp. Without it, it has 600 lb/ft of torque. With it…. 700 lb/ft.

It drops 1/2 second in 0-60 and the 1/4 mile.

If the real world examples aren’t enough, any physics book will explain it better.

 

[69Mach390]

I’m guessing the prior owner never reset the numbers but this braking number seems pretty dang high!

21” wheel package with 265 front 305 rear and summer tires so I’m sure that helps.

Looks like I need to try a few harder left turns, but at least I can see it never made it to a track.

Sponsored