H&R OE Sport Springs
OE Sport Springs are H&R's entry-level lowering spring for BMW, engineered from 54SiCr6 spring steel to work with your car's factory shocks and struts, no matching dampers required. Coverage here spans a wide range: E30 and E36 3-Series/M3, E82 1-Series, F10 5-Series, and G87 M2.
Expect a modest drop and reduced body roll versus stock, without the stiffer ride of a full coilover setup. This is the spring to pick if you want a cleaner stance and tighter handling but plan to keep your OE suspension components.