How is the M540is chassis different from that of a normal 540i?
The suspension of the M540i is identical to the standard “Nurburgring” chassis of the European-spec E34 M5. It therefore incorporates the following modifications over the normal 540i setup: -Adaptive M Suspension, an M-tuned version of Electronic Damping Control (EDC) that electronically chooses the optimum shock rates based on sensors that gather road speed, steering input, acceleration/deceleration loads and lateral body movements -20mm reduction in ride height -25 percent firmer spring rates -Self-leveling rear shocks -Thicker antiroll bars front and rear -Adjustable rear toe-in The recirculating ball steering utilizes the E34 M5’s quicker ratio (15.6:1) and available ZF Servotronic (vehicle-speed sensitive) power assist.
