[maechthildt]

Only M cars with mechanical clutches have the counter. We have oil filled converter transmissions in which the oil temperature is measured and the lc just won't work if the oil does not have the correct temperature.

BMW also says the lc wear and tear gearbox wise is not as bad as before and there is no need for a counter.

Fun fact: The shop tried reading out every control unit before finding out that this value does not even exist.

[witz323]

I have a 'm8 comp coupe that I purchased as a CPO over a year ago and I have not been able to get the lc to function. I just assumed the previous owner had hit the limit.

[Kponti]

LC still activates even if you have exceeded the counter. You just do not get the same launch and QS3 shifts (the one that feels like the car jumps forward with each shift)

It feels equally brutal, so you can only tell you have exceeded the counter when your 0-60mph times slow down.

Several people with the torque convertor (M8 and M5) have exceeded and documented slowing down of their cars so your info is not accurate

[maechthildt]

Originally Posted by Kponti

LC still activates even if you have exceeded the counter. You just do not get the same launch and QS3 shifts (the one that feels like the car jumps forward with each shift)

It feels equally brutal, so you can only tell you have exceeded the counter when your 0-60mph times slow down.

Several people with the torque convertor (M8 and M5) have exceeded and documented slowing down of their cars so your info is not accurate

It is accurate - no counter. BMW confirmed this info as binding.

There might be other reasons why they get slower...

[ctelimad]

Originally Posted by Kponti

LC still activates even if you have exceeded the counter. You just do not get the same launch and QS3 shifts (the one that feels like the car jumps forward with each shift)

It feels equally brutal, so you can only tell you have exceeded the counter when your 0-60mph times slow down.

Several people with the torque convertor (M8 and M5) have exceeded and documented slowing down of their cars so your info is not accurate

I totally agree
Call it what u want to call it but after u hit certain limiter u can not achieve the same 0 to 60 time despite lainch control
You are always 0.1 slower
I did not believe this initially until i experienced it and the sound of the shifting in launch control changes

[maechthildt]

Originally Posted by ctelimad

I totally agree
Call it what u want to call it but after u hit certain limiter u can not achieve the same 0 to 60 time despite lainch control
You are always 0.1 slower
I did not believe this initially until i experienced it and the sound of the shifting in launch control changes

I read about that a couple of times. The absence of a counter does not say anything about there being no wear.

What could cause this degradation?

Edit: The guy from BMW said that there is no physical way to measure the wear with these kind of transmissions.
How many lcs did you have before this?

[Tenac]

Originally Posted by maechthildt

I read about that a couple of times. The absence of a counter does not say anything about there being no wear.

What could cause this degradation?

Edit: The guy from BMW said that there is no physical way to measure the wear with these kind of transmissions.
How many lcs did you have before this?

Don't for get a .1 slow down can come down to so many factors that doesn't even include the car..... Say now you have 9k miles on the tires compared to 2k, Tire pressure, weight, wind, temp etc list goes on.

You are correct, there is nothing measuring wear on the vehicles, so it can be so many different things causing any sort of loss of time/speed.

[KONG991TT]

The ZF transmissions are solid and seem to be bullet proof hence why they're so widely adopted but I can't imagine that there's a large population obsessed with launching big fat heavy cars like ours. To me, it's a pointless exercise. #butwhytho?

[Wavy]

I think launch control makes more sense on a rwd vehicle. It takes a huge amount of torque to brake the tires loose on a AWD vehicle.

[bloozemanAZ]

limeypride if memory serves you hit the LC limiter on your first GC no different than your M5s. Also if memory serves it definitely was the ZF transmission that slowed down the shifts aka less aggressive than before the first 100.

[ctelimad]

Originally Posted by bloozemanAZ

limeypride if memory serves you hit the LC limiter on your first GC no different than your M5s. Also if memory serves it definitely was the ZF transmission that slowed down the shifts aka less aggressive than before the first 100.

I can 100% say that the shifts changes on launch control when u hit certain limiter (u can feel it and i confirmed it with draggy)
U will not understand until u drive them back to back (one that hit limiter vs one that did not)
And No i am not hallucinating and Limeypride can confirm that
I am on my second M8 and i had the first one for 3 years and this new one for almost 9 month and i knew when i hit the limiter on the first one.

[limeypride]

Originally Posted by ctelimad

I can 100% say that the shifts changes on launch control when u hit certain limiter (u can feel it and i confirmed it with draggy)
U will not understand until u drive them back to back (one that hit limiter vs one that did not)
And No i am not hallucinating and Limeypride can confirm that
I am on my second M8 and i had the first one for 3 years and this new one for almost 9 month and i knew when i hit the limiter on the first one.

Confirmed. I’ve hit it on 2 M-cars and lost 0.4s to 60 and more in the 1/4 mile.

[maechthildt]

Originally Posted by limeypride

Confirmed. I’ve hit it on 2 M-cars and lost 0.4s to 60 and more in the 1/4 mile.

0.4 is a lot. I assume you confronted BMW with this, what did they say? ctelimads car was only 9 months old, so if BMW confirms that there is no counter, in their logic, something must be broken.

It does not seem to be a consistent delta. In this thread alone are reports of losses from 0.1 to 0.4s.

[limeypride]

Originally Posted by maechthildt

0.4 is a lot. I assume you confronted BMW with this, what did they say? ctelimads car was only 9 months old, so if BMW confirms that there is no counter, in their logic, something must be broken.

It does not seem to be a consistent delta. In this thread alone are reports of losses from 0.1 to 0.4s.

The car I’m citing was tuned and hit 60 in 2.5s, it dropped to 2.9 or worse. 1/4 mile was 10.37s at ~133mph and dropped back to 11s.

No. Confronting BMW was thoroughly researched by many and their language/performance claims are clever/clear enough. This is a ~5-year old thing for me and, tbh, I no longer care about it. My current M8 still launches properly; no idea how many are left but I’m 2-years in and no longer drag race so…

[limeypride]

Only M cars with mechanical clutches have the counter. We have oil filled converter transmissions in which the oil temperature is measured and the lc just won't work if the oil does not have the correct temperature.

Simply not true. See my prior posts; they explain it all in great detail.

[bloozemanAZ]

Originally Posted by maechthildt

0.4 is a lot. I assume you confronted BMW with this, what did they say? ctelimads car was only 9 months old, so if BMW confirms that there is no counter, in their logic, something must be broken.

No if you read his post closely he hit it with his 1st M8 that he had for 3 years. He hasn't hit it with the 9 month old one.

[ctelimad]

Originally Posted by bloozemanAZ

No if you read his post closely he hit it with his 1st M8 that he had for 3 years. He hasn't hit it with the 9 month old one.

Right on my old one.
The new one i did not reach the limiter yet given i dont launch it that much (i launched it twice since i got it)
Thr old one i used to launch it at least twice a week of not more lol
Like limeypride i dont care much about launch i am more like 60 to 130 guy with the new one