Dang near killed myself!

[decodeddiesel]

Tighten the nut behind the wheel. #1 best mod of all time.

ETA: Hubris. I'm out.

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[Schang105]

Hi OP, congrats on ur new Supra! Try the following during an HPDE or empty lot and see if these help:

-Corner entry neutral on throttle. Mid-corner shifts have been known to upset the rear, especially on earlier model years.
-Smooth inputs into corner, gradually roll onto throttle past apex and deeper on corner exit.
-Minimize steering inputs, to less than 25 degrees of change in either direction from center. Greater than 25 degrees too quickly could cause rear to "snap".
-stock suspension is optimized for street, trade off is the front and rear feel somewhat disconnected. So there isn't much warning the back will come around, hence the "edgy" feeling.

 

[razorlab]

Hi OP, congrats on ur new Supra! Try the following during an HPDE or empty lot and see if these help:

-Corner entry neutral on throttle. Mid-corner shifts have been known to upset the rear, especially on earlier model years.
-Smooth inputs into corner, gradually roll onto throttle past apex and deeper on corner exit.
-Minimize steering inputs, to less than 25 degrees of change in either direction from center. Greater than 25 degrees too quickly could cause rear to "snap".
-stock suspension is optimized for street, trade off is the front and rear feel somewhat disconnected. So there isn't much warning the back will come around, hence the "edgy" feeling.

Or just get into throttle after launching off track curbing... ?

 

[Loco38SUP]

If you go to this thread you can see many single click TC results. I bet 80% disabled traction control then F’d around and found out.

Stickier tires will help but learning the limits is a big plus

And they found out.

-RJM

 

[DrSupra]

I did my first autocross with one click on the traction control button. There was a turn at the end of the course onto the final straight that I was able to go full throttle out of. It was fun getting a little bit sideways. My suspicion is when I go back to that autocross track, that I definitely should not try doing that with all the nannies off because I'll end up spinning off the track. Just the one click on the traction control button felt like a good balance for someone like me with no prior autocross or track experience of any kind. I'm going to be super cautious when I give it a shot with everything off because I suspect that the stability control or whatever remains on with only one click and not a click and hold saved me many times without my realizing it. I have a lot to learn about how the car behaves.

 

[jchadwell]

Traction mode (single click) is incredibly lenient in these cars. I used it a few times for autocross when I first got the car and was amazed how late it intervened. It allowed huge slip angles!

 

[razorlab]

Traction mode (single click) is incredibly lenient in these cars. I used it a few times for autocross when I first got the car and was amazed how late it intervened. It allowed huge slip angles!

I track with just 1 click off, as well as many others. Only time it intervenes is when I do something really stupid and then I am glad it's there.

 

[Deathscythe]

One way I found to help during my HPDE track days was the following:

• KW club sports
  • Rear low speed compression set to 0 or 1
• Alignment with more rear toe in
• Good set of tires (I had A052s)

When comparing laps, most other Supra owners complained of a wild rear end, where mine was almost impossible for me to unstick.

With this setup you'll get a fair amount of squat in the rear end but rear weight transfer is ultra gradual especially in sweeping corners. I believe this is also KW's suggested starting setup.

Tires also mean a lot with how much confidence you have applying power in sweeping corners. On the street I stopped using Michelins because personally, I didn't like how each sweeping turn felt like a 2 part movement to me. I switched to Continentals on the street because turning reaction was more linear (to me) and that gave me more confidence. (Despite the overall limits being slightly lower with the Continentals)

That being said, I also don't really go more than 4/10ths when driving on public roads.

 

[thakid22]

So I usually drive around with all the nannies on. When I take long sweeping turns every now and and gently accelerate into the turn I can see the track to control kicking on. I know this means the rear end is slipping out, but this happens on rare occasions, and the nanny always catches it.

Today I turned off the traction control off with one click. I was was going around the corner like usual, but this time when it slipped it damn near spin me around and got all out of control! Luckily, it finally caught itself and I straightened out, but scared the hell out of me.

I have a 2020, what is the best solution for reducing the tail happiness of this car without major suspension modifications?

currently, I’m on H&R lowering springs (Z4)with 265 front and 295 back tires

To reduce this tendency, you can fit a larger front antiroll bar. Alternatively, you can use a smaller rear antiroll bar.

As an added benefit, if you go with the larger front bar, you will also find that your steering will be more heavy in general. The Bmw dual axis geometry of the front knuckle/arms respond really well to a larger bar.

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