Full-time all wheel drive. Viscous coupling locking center differential with torque split 37% front / 63% rear. The viscous coupling is integrated into the planetary gear center differential. viscous coupling locks the differential when wheel slipping occurs and transfers up to 90% of torque to the axle that has traction. Viscous coupling locking rear differential distributes torque between the rear wheels.
Podaci preuzeti sa http://www.awdwiki.com/en/bmw/, gde se vidi evolucija 4x4 pogona.
Za radoznale i http://forums.bimmerforums.com/forum/sh ... -of-the-Ix
