The H&R 29187-5 is a set of Sport lowering coil springs for the 2008-2011 BMW 335d Sedan (E90), the diesel version of the third-generation 3 Series. It replaces the factory springs at all four corners, so the car sits lower and the body's center of gravity drops. For a heavy sedan, that lower center of gravity can reduce the body lean and nose dive you feel in quick direction changes and hard braking. The trade-off compared with stock is a firmer, more controlled ride, and a set like this is a practical street upgrade if you want a sportier stance without moving to a coilover. Shoppers comparing lowering springs for the E90 335d should check the listed application and confirm the drop height before ordering.
This set suits drivers searching for E90 335d lowering springs, 2008-2011 BMW 335d sport springs, or a 29187-5 replacement for worn factory coils. Fitment is listed for the E90 335d Sedan only, so it does not apply to coupes, wagons, or other E90 variants. Lowering height can vary on cars with a factory sport suspension package, such as M-Technik, so confirm your car's existing setup before you buy. Replacing springs also changes how the shocks and struts work, so plan on inspecting the dampers at the same time. This is a DIY-friendly job for a home mechanic with a spring compressor, but a shop alignment afterward is advisable.