[grant]

I double-clutch and heel-toe with my 73 911, but the gearbox in that car really appreciates it. I would think double-clutching a modern BMW gearbox is almost never necessary (unless maybe downshifting into first when the gear oil is still cold in the morning). But, Heel-toe Yes - this is an underappreciated facet of high performance driving and necessary for best performance on the track in particular!