I almost always put mine in neutral at a stoplight... Allows me to give my clutch leg a break!

It also takes a load off the throwout bearing; the TO is spinning with the clutch disengaged.

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2001 X5 Sport 3.0/5-speed
1998 318ti/5-speed
1988 735i/5-speed
1984 528e/5-speed (soon to be M20B25-powered 525i!)