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      02-15-2020, 05:36 AM   #1
x6Hawkeye
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BMW M850i Launch Control

Perhaps a silly question, but how do you activate launch control in the M850i?
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      02-15-2020, 07:35 PM   #2
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Just passed the 1200 mile break-in in which the manual states to absolutely not use launch control as it will exceed the 4500 RPM during the period. Just dug up the instructions from the online user manual. Pretty straight forward with disengaging DSC and putting the transmission in S (slide it to the left but do not push forward or back as that will also engage manual shifting).
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      02-15-2020, 09:28 PM   #3
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Quote:
Originally Posted by bloozemanAZ View Post
Just passed the 1200 mile break-in in which the manual states to absolutely not use launch control as it will exceed the 4500 RPM during the period. Just dug up the instructions from the online user manual. Pretty straight forward with disengaging DSC and putting the transmission in S (slide it to the left but do not push forward or back as that will also engage manual shifting).
I was out in Phoenix AZ showing my M850i to my father in law (his 2009 x5). I blew his doors off.

Yes, that's exactly how launch control works. And it works! There are also some YouTube videos including a car wow m5 vs m8 that just came out.

P.S. I think there is a way to adjust rpm at launch, but I don't know how and honestly unless your at a drag strip you don't need to mess with it. Just launch and go.
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      02-15-2020, 11:36 PM   #4
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Quote:
Originally Posted by bloozemanAZ View Post
Just passed the 1200 mile break-in in which the manual states to absolutely not use launch control as it will exceed the 4500 RPM during the period. Just dug up the instructions from the online user manual. Pretty straight forward with disengaging DSC and putting the transmission in S (slide it to the left but do not push forward or back as that will also engage manual shifting).
Awesome, thank you!
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      02-16-2020, 10:16 AM   #5
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Quote:
Originally Posted by x6Hawkeye View Post
Quote:
Originally Posted by bloozemanAZ View Post
Just passed the 1200 mile break-in in which the manual states to absolutely not use launch control as it will exceed the 4500 RPM during the period. Just dug up the instructions from the online user manual. Pretty straight forward with disengaging DSC and putting the transmission in S (slide it to the left but do not push forward or back as that will also engage manual shifting).
Awesome, thank you!
I checked it today, it's the cruise control level. adjust it to send the RPM up prior to launch.

but again even the default is plenty of power.
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      02-16-2020, 10:11 PM   #6
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Originally Posted by Resjudicata View Post
I was out in Phoenix AZ showing my M850i to my father in law (his 2009 x5). I blew his doors off.

Yes, that's exactly how launch control works. And it works! There are also some YouTube videos including a car wow m5 vs m8 that just came out.

P.S. I think there is a way to adjust rpm at launch, but I don't know how and honestly unless your at a drag strip you don't need to mess with it. Just launch and go.
Glad to hear someone has tried it. I've been waiting for the break-in period to expire. I have the perfect rural road in mind to give it a go on one of these upcoming weekends. It's several miles of just straight driving with low traffic so should be able to stop and launch a few times.
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      02-17-2020, 11:25 AM   #7
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Quote:
Originally Posted by bloozemanAZ View Post
Quote:
Originally Posted by Resjudicata View Post
I was out in Phoenix AZ showing my M850i to my father in law (his 2009 x5). I blew his doors off.

Yes, that's exactly how launch control works. And it works! There are also some YouTube videos including a car wow m5 vs m8 that just came out.

P.S. I think there is a way to adjust rpm at launch, but I don't know how and honestly unless your at a drag strip you don't need to mess with it. Just launch and go.
Glad to hear someone has tried it. I've been waiting for the break-in period to expire. I have the perfect rural road in mind to give it a go on one of these upcoming weekends. It's several miles of just straight driving with low traffic so should be able to stop and launch a few times.
yep, also I think you have to wait 5 miles between launches. I don't think you can do them back to back. I've only done it once a day, but I'd think 2 or 3 times a day could be possible, I know the manual says it needs a cool down and warm up period.
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      02-17-2020, 06:04 PM   #8
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Originally Posted by Resjudicata View Post
yep, also I think you have to wait 5 miles between launches. I don't think you can do them back to back. I've only done it once a day, but I'd think 2 or 3 times a day could be possible, I know the manual says it needs a cool down and warm up period.
Yes, the manual indicates 5 minutes (at least) of cool down time before it will engage again. Figure I'll do one on the drive out and one on the way back which will give plenty of time for the cool down. The interesting thing in the manual is that it states launch control adjusts to the surrounding conditions when used again. Not sure what that means other than the engine, transmission, etc. needs to be properly cooled down before it will engage again.
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      02-17-2020, 10:10 PM   #9
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Guess

Quote:
Originally Posted by bloozemanAZ View Post
Quote:
Originally Posted by Resjudicata View Post
yep, also I think you have to wait 5 miles between launches. I don't think you can do them back to back. I've only done it once a day, but I'd think 2 or 3 times a day could be possible, I know the manual says it needs a cool down and warm up period.
Yes, the manual indicates 5 minutes (at least) of cool down time before it will engage again. Figure I'll do one on the drive out and one on the way back which will give plenty of time for the cool down. The interesting thing in the manual is that it states launch control adjusts to the surrounding conditions when used again. Not sure what that means other than the engine, transmission, etc. needs to be properly cooled down before it will engage again.
I have no clue, but my only guess would be adjusted based on temperature and wheel slip. I will say the wheels spin a good bit with higher rpm launches, so even though you're turning traction off, I'm guessing it tries to give you a better grip on multiple launches based on tires.

But I'd be interested and curious to know what happens!
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