Rear Right Coil Spring (Separate) - 2011 528i

For the 2011 BMW F10 528i with N52B30 engine, the rear right coil spring (BMW 33536785634 for standard suspension) is a separate component from the shock absorber, unlike the integrated front struts. This 2010-2016 generation 5-Series uses side-specific rear springs with distinct color code markings—typically violet or blue paint bands indicating load ratings. When sourcing from salvage, verify the spring's free height against specifications (approximately 340mm) and inspect for coil contact wear or corrosion at the mounting seats. The 33536785634 interchanges with early 535i RWD models but avoid xDrive or M-Sport variants using stiffer 33536785636 springs. Installation requires lowering the rear suspension carrier or using spring compressors safely. Common failures include sagging after 80,000 miles, causing uneven ride height and premature tire wear. Always replace in pairs to maintain chassis balance, and confirm your 528i retains the N52 inline-six rather than the later N20 four-cylinder, which uses different rates.