[UrbanExtant]

JNoSol, make no mistake about it, BMW does very diligently track launch control usage. I have it on very good authority that this is so. Frequently having interactions with higher-ups in BMW, and the constitution to ask very direct, poignant questions, yields some interesting results, and information.

Yes, they want people to track the vehicle, within their level of what is reasonable. Simple economics mandate that supporting continual warranty claims for abuse via track, and drag strip usage would be unwise, and financially inadvisable for BMW. It is for us to figure out what their level of acceptable track usage is, and to live within that.

Launch control puts considerable strain on the drivetrain. The engine being well over $40k dollars, and the transmission a many times over $10k piece of equipment, not to mention differentials that can be warped and strained with repeated abuse. Humankind is not at the point in time where they are able to make metal refuse to wear from fatigue. replacing these pieces in multiple M vehicles that have been beaten with launch control, racing, and drag strip usage with out setting some limits to which you'd deny claims, is simply something a corporation like BMW would not propose to do.