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      12-04-2019, 05:01 PM   #1
mr_lab_rat
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Solved: Traction control issue preventing acceleration at high speed

I haven't seen this covered in many threads but the issue is real.

Symptoms: TCS gets confused when going WOT at high speed (60+ MPH, 6th gear), thinks the rear wheels are slipping and starts cutting power.
This seems to affect older cars (mine is built 03/2017) and the problem gets worse with square tire setup (245/45/18 in my case).

Solution: update the DSC software (I went from 505 to 530). The updated software has much less intrusive stability control. Besides solving the above problem the car is way more fun to drive when DSC and TCS doesn't panic all the time.
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      12-06-2019, 01:41 PM   #2
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Quote:
Originally Posted by mr_lab_rat View Post
I haven't seen this covered in many threads but the issue is real.

Symptoms: TCS gets confused when going WOT at high speed (60+ MPH, 6th gear), thinks the rear wheels are slipping and starts cutting power.
This seems to affect older cars (mine is built 03/2017) and the problem gets worse with square tire setup (245/45/18 in my case).

Solution: update the DSC software (I went from 505 to 530). The updated software has much less intrusive stability control. Besides solving the above problem the car is way more fun to drive when DSC and TCS doesn't panic all the time.
How did you update it?
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      12-06-2019, 03:20 PM   #3
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Quote:
Originally Posted by mr_lab_rat View Post
I haven't seen this covered in many threads but the issue is real.

Symptoms: TCS gets confused when going WOT at high speed (60+ MPH, 6th gear), thinks the rear wheels are slipping and starts cutting power.
This seems to affect older cars (mine is built 03/2017) and the problem gets worse with square tire setup (245/45/18 in my case).

Solution: update the DSC software (I went from 505 to 530). The updated software has much less intrusive stability control. Besides solving the above problem the car is way more fun to drive when DSC and TCS doesn't panic all the time.
Awesome, I used to have this problem in my 350Z after switching to a square setup. My solution was to switch off the traction control the minute i got in the car.

BMW FTW.
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      12-07-2019, 03:36 PM   #4
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Quote:
Originally Posted by Mosely View Post
How did you update it?
Took it to dealer. First I tried to convince them it was a TCS issue but they kept blaming my non-OEM tire setup.

So I brought it in second time and complained about iDrive issues.
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      02-09-2020, 05:01 PM   #5
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Quote:
Originally Posted by mr_lab_rat View Post
I haven't seen this covered in many threads but the issue is real.

Symptoms: TCS gets confused when going WOT at high speed (60+ MPH, 6th gear), thinks the rear wheels are slipping and starts cutting power.
This seems to affect older cars (mine is built 03/2017) and the problem gets worse with square tire setup (245/45/18 in my case).

Solution: update the DSC software (I went from 505 to 530). The updated software has much less intrusive stability control. Besides solving the above problem the car is way more fun to drive when DSC and TCS doesn't panic all the time.
Didn't think anyone else had this issue my traction light came on at about 70 mph it was cold outside so I didn't really think anything of it until it happened again
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      02-10-2020, 10:32 PM   #6
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Quote:
Originally Posted by JoshuaevansF87 View Post
Didn't think anyone else had this issue my traction light came on at about 70 mph it was cold outside so I didn't really think anything of it until it happened again
Did you do anything about it? Were you also on a square setup?
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      02-10-2020, 10:55 PM   #7
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Off topic: do your wheels rub with your 245/45/18 setup? It is quite a bit bigger on the front compare to stock 245/35/19. Most people run 245/40/18.
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      02-10-2020, 11:12 PM   #8
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I'm not sure what version my software is on but I did end up coding the euro dsc settings as well as M4 gts mdm and have no complaints or traction issues. My car was manufactured 10/16.
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      02-10-2020, 11:26 PM   #9
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Quote:
Originally Posted by mr_lab_rat View Post
Quote:
Originally Posted by JoshuaevansF87 View Post
Didn't think anyone else had this issue my traction light came on at about 70 mph it was cold outside so I didn't really think anything of it until it happened again
Did you do anything about it? Were you also on a square setup?
No I'm not on square setup and I haven't done anything about it couldn't figure out a solution I have a service coming up might have bmw look into it
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      02-11-2020, 07:34 AM   #10
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Quote:
Originally Posted by MetalMK View Post
Off topic: do your wheels rub with your 245/45/18 setup? It is quite a bit bigger on the front compare to stock 245/35/19. Most people run 245/40/18.
Not OP but I ended up with a square set of winter tires in 245/45/18. They only rub in front when in reverse and and almost full steering lock. Even when they do rub it's a "gentle" rub
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      02-11-2020, 12:13 PM   #11
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Quote:
Originally Posted by MetalMK View Post
Off topic: do your wheels rub with your 245/45/18 setup? It is quite a bit bigger on the front compare to stock 245/35/19. Most people run 245/40/18.
Typo, my tires are 245/40/18 on 18x9 ET30 wheels with 10mm spacers. No rubbing, mildly lowered.

Quote:
Originally Posted by andrewc89 View Post
I'm not sure what version my software is on but I did end up coding the euro dsc settings as well as M4 gts mdm and have no complaints or traction issues. My car was manufactured 10/16.
Euro MDM will also take care of it, probably allows even more freedom but my updated North American software is wild enough for me.

Quote:
Originally Posted by JoshuaevansF87 View Post
No I'm not on square setup and I haven't done anything about it couldn't figure out a solution I have a service coming up might have bmw look into it
The only other search hit I got was for someone with overinflated tires describing similar symptoms. When you go to the dealer I suggest not bothering with explaining the DSC troubles, just complain about the iDrive locking up and going blank intermittently. They will update the whole car. And if you are running older software you will notice a big difference in DSC plus slightly better steering feel, and with manual less boost loss when shifting.
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