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      05-20-2010, 05:47 AM   #28
mrdenis
mcopb8
United_States
2

 
Drives: 2011 E92 M3
Join Date: Feb 2010
Location: Massachusetts


Posts: 71
iTrader: (0)

In the USA on the E46 there is no limit on the number of launches you can do and it does not void the warranty but the launch RPM is lowered to reduce the wear and tear. I was told the computer actually performs a many engage-disengage sequences that increases wear but i could never tell. I have done this many times and at one point had the clutch replaced (for unrelated reasons) and the clutch did not show any wear after all the abuse. Maybe the gearbox is another story .

Outside the USA the launch RPM is higher but once you have used launch mode three dozen times orso, it will not work anymore until the dealer clears the s/w latch which will void the warranty.

I am very curious to hear how the E9x differs in this regard.

Also, on the E46 you can control whether to launch with maximum traction or maximum torque. The latter will draw nice black lines on the tarmac but you will go nowhere fast . Is such control available on the E9x?
__________________
2011 BMW X5 diesel - save the gas for the M3!
2011 BMW M3 coupe - the private entertainment system
2007 BMW 750i - sold
2006 BMW M3 coupe - sold
1999 BMW 540i touring - sold

Last edited by mrdenis; 05-20-2010 at 07:55 AM. Reason: ipad fat fingers...