SilverGrayE86
New member
I installed a set of 4.10 differential gears in my 06 Z4 M (E86) and love the performance. However, now, I hear this "Beep" when starting off in 1st or Reverse gear and a message flashes on my dash displaying: "4 mph".
Has anyone experienced this or have any ideas what may be happening?
Has anyone experienced this or have any ideas what may be happening?