What suspension does the BMW M140i use?
2 Answers
The BMW M140i uses an independent suspension system, with a double-joint independent suspension at the front and a multi-link independent suspension at the rear. Here is an introduction to the multi-link independent suspension: Meaning: The multi-link independent suspension consists of links, shock absorbers, and suspension springs. It has more links than a typical suspension, and by convention, suspensions with 4 or more links are referred to as multi-link suspensions. Function: The multi-link suspension not only ensures a certain level of comfort but also, due to the higher number of links, allows the wheels and the ground to remain as vertical as possible, minimizing body tilt. It maximizes tire contact with the ground.
I drove the M140i for a while, and the suspension was truly impressive. The front suspension adopts a double-joint spring strut design, paired with precise geometric arrangements to provide more direct feedback during steering. The rear suspension features a classic five-link layout, enhanced by M Division's sport tuning, making the overall setup more performance-oriented. The benefit of this design is significantly reduced body roll during high-speed cornering and noticeably improved grip. However, daily city driving might feel a bit stiff, with pronounced vibrations over speed bumps. Yet, it shines during high-speed cruising or spirited mountain driving. BMW has done a clever job balancing sportiness and comfort, especially making the rear-wheel-drive version feel more agile. Regular checks on suspension components, such as bushings for signs of aging, are crucial to prolonging their lifespan.
