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Old 09-22-2017, 01:12 PM   #2
Theo
Crazy Old Man
 
Join Date: Dec 2003
Carmudgeonly Ride: M2C Stick
Posts: 6,021
Both the new M5 and E63 use trick diff's to switch between 2 and 4 wheel drive. Pretty slick since if you want to you can still do sick drifting then switch back to 4wd in the rain.
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