View Single Post
      10-19-2011, 06:34 PM   #41
Zba's Avatar

Drives: 2011.685 E92 M3
Join Date: Feb 2011
Location: Denver, CO

iTrader: (0)

Garage List
2011.5 M3  [4.87]
Originally Posted by e92zero View Post
as someone asked above already, what are the torque spec on these bolts? anyone know?
The smaller of the bolts which break on the rear differential are torqued to 100 nm or 74 ft/lbs.

The large diff bolt is torqued to 165 nm or 122 ft/lbs.

Does anyone know if these bolts are aluminum?

I also had a clunking from the rear end and found my two smaller diff bolts loose, not enough to move them by hand, but not torqued to spec. If the bolts are aluminum, that could certainly be an issue (as far as breakage) if the proper torque is not used.

Last edited by Zba; 11-14-2011 at 05:27 PM. Reason: updated torques