Launch control
Discussion
Thought about it a couple of times...engaged it once (to prove to myself I had the routine worked out)...but no...never gone through with a launch.
It's probably just me being over-protective but I just don't think it's such a good idea to dump 500+ hp through the transmission from a standing-start.
It's probably just me being over-protective but I just don't think it's such a good idea to dump 500+ hp through the transmission from a standing-start.
Launch control is harsh on the car, but so long as the clutch is allowed to cool between launches wont wear as fast as you might think. With the E46 M3 BMW allowed i think 3 launches on a clutch before the warranty is voided. Now, i think that the latest E60/1/3 M5s and 6's are allowed 7 launches on a clutch before warranties are voided. All the data and counters are stored on the cars hard drive so BMWUK can have BMWHQ check the cars history should the owner be looking to make a clutch or drivetrain claim. I know mine was checked when i had my new clutch fitted. Clutch temps, oil, coolant and engine temps are all factors when BMW decide to cover you or not. Sensible use is allowed, but its really not a tool for constant traffic light GP's.
do it! Its what the cars designed for!
In the E46 the speed at which you press the accelerator will determine the ferocity of the launch. If you mash the pedal it will do a clutch dump. Otherwise it will slip the clutch enough to get a perfect launch time after time.
You gotta do it atleast once!
In the E46 the speed at which you press the accelerator will determine the ferocity of the launch. If you mash the pedal it will do a clutch dump. Otherwise it will slip the clutch enough to get a perfect launch time after time.
You gotta do it atleast once!
ecain63 said:
Launch control is harsh on the car, but so long as the clutch is allowed to cool between launches wont wear as fast as you might think. With the E46 M3 BMW allowed i think 3 launches on a clutch before the warranty is voided. Now, i think that the latest E60/1/3 M5s and 6's are allowed 7 launches on a clutch before warranties are voided. All the data and counters are stored on the cars hard drive so BMWUK can have BMWHQ check the cars history should the owner be looking to make a clutch or drivetrain claim. I know mine was checked when i had my new clutch fitted. Clutch temps, oil, coolant and engine temps are all factors when BMW decide to cover you or not. Sensible use is allowed, but its really not a tool for constant traffic light GP's.
Can BMW UK or BMW Dealers monitor clutch temps or oil temps how has varied between services when they plug in OBD ?Why is it important for clutch to cool and how does letting it cool allow u to do more launch control starts ?
Thanks :-)
thepony said:
ecain63 said:
Launch control is harsh on the car, but so long as the clutch is allowed to cool between launches wont wear as fast as you might think. With the E46 M3 BMW allowed i think 3 launches on a clutch before the warranty is voided. Now, i think that the latest E60/1/3 M5s and 6's are allowed 7 launches on a clutch before warranties are voided. All the data and counters are stored on the cars hard drive so BMWUK can have BMWHQ check the cars history should the owner be looking to make a clutch or drivetrain claim. I know mine was checked when i had my new clutch fitted. Clutch temps, oil, coolant and engine temps are all factors when BMW decide to cover you or not. Sensible use is allowed, but its really not a tool for constant traffic light GP's.
Can BMW UK or BMW Dealers monitor clutch temps or oil temps how has varied between services when they plug in OBD ?Why is it important for clutch to cool and how does letting it cool allow u to do more launch control starts ?
Thanks :-)
ecain63 said:
Yeah, bmwhq can download the cars blackbox which stores all the cars data. High clutch temps will cause friction surfaces to deteriorate faster than when at normal running temps. Remember that smell you get from a manual car when you've ridden the clutch too long, that's it burning up. Allowing it to cool between launches means the metallic elements in the clutch plates won't burn and separate from the other elements.
Thanks :-)Gassing Station | M Power | Top of Page | What's New | My Stuff