The H&R 50435 is a progressive-rate sport lowering spring set for the second-generation BMW X5 (E70) without factory self-leveling. The manufacturer makes the springs from 54SiCr6 spring steel, shot-peened for fatigue life, in an ISO 9001 certified plant in Germany. This is a spring-only swap, so the existing shocks stay in service, which keeps the job simpler and cheaper than a full coilover conversion.
Compared with stock, the lower ride height closes the fender-well gap and moves the center of gravity down, which reduces body roll in corners. The progressive rate is meant to feel comfortable on daily commutes while firming up under hard cornering. For an E70 owner searching for a street-friendly handling upgrade, that balance is the main reason to choose H&R over a generic lowering spring. Confirm the exact drop for your vehicle with the manufacturer before ordering, because the published figures vary by listing.
Fitment depends on the car's suspension and trim. This 50435 version is for 2007–2013 X5 models with a passive rear coil setup, including diesel models. Vehicles with factory self-leveling need a different H&R kit, so check for rear air suspension using your VIN before buying. Searches for "E70 X5 w/o self-leveling lowering springs," "H&R 50435 X5 sport springs," and "2007-2013 X5 progressive lowering springs" will bring up this exact part.
