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E82 Complete Vehicle
Chassis Dynamic Driving Systems
The E82 has many features in common with the E9X as far as the chassis and dynamic
driving systems. The double pivot spring strut front axle design of the 3, 5, 7 and 8
Series vehicles will now be used on the 1 Series. With the exception of the 135i sport
tuned version the front and rear suspensions are inspired by the E90 design.
Double Pivot Spring Strut Front Axle
The double pivot system establishes a geometrical “axis” formed by the suspension
links, creating one upper and two lower pivot points. Two lower pivot points (double
pivot) established by the control arm and tension strut create an “imaginary” pivot point,
that is extended further out on the wheel carrier. This design allows pivot points on the
wheel carrier to be selected in order to effectively accommodate larger brakes.
Additional advantages of double pivot system are:
• Ability to reduce body roll while cornering.
• Reduces front nose dive tendencies during severe braking situations.
• Utilization of a small positive steering offset, which offers improved handling
if friction levels while braking is different on both wheels.
• Enhanced caster position, improves straight line stability at higher speeds,
plus better steering return after small steering inputs.
Chassis Dynamics
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