Audi 100 Quattro, Owner'S Manual

Page: 91 / 180

VEHICLE OPERATION
89
hen turning into a par-
king space on dry road or when turning
is
aged
Note
BS Differential Lock and A
The differential lock is to be used only
when starting off in difficult road condi-
tions. The lock disengages automatically
at speeds above approximately 15 mph
or 25 knVh. The lock should be disenga-
ged manually if this speed is not reached
after driving off. If the differential lock is
not disengaged, the car is harder to han-
dle, for example, w
around a tight corner. Also, tire wear
increased with locked differential.
The ABS is deactivated automatically
whenever the differential lock is eng
because it is not possible to regulate the
braking forces individually at each wheel
when there is a fixed mechanical connec-
tion between the two rear wheels.
Replacing wheels and tires
All four wheels on the Audi 100 quattro
must always have the same rolling radi-
us. However, differently worn tires do not
impair the function of the Torsen center
differential. See also page 124.
Performance testing
To check engine performance, only use a
dynamometer designed to brake all four
wheels simultaneously.