Page 1 of 1

Metric Mechanic’s Differentials

Posted: Tue Feb 18, 2020 1:24 pm
by Peter
BMW Differentials come in three sizes which are classifi ed

by the ring gear outside diameter measured in millimeters.

An overview of their use follows:

Small Differential 168 mm

Generally used behind 4 Cylinder engines

Medium Differentials 188 mm

Generally used behind Small and Big Six engines

Large Differentials 210 mm

Generally used behind early M5, M6, V8,

V12, some early 7 Series and E 46 M3 engines