BMW E30 shock absorbers, springs and top mounts
Why does the E30 rattle from the rear over bumps?
The rear shock absorber top mount rubbers may be completely worn out. Replacing the rubbers removes the rattle. A growl from the rear can instead come from a loose top mount bearing.
Why does the E30 lean, with one side higher?
The cause may be a rotten rear spring seat, which lets the spring collapse. A loose spring rubber can also cause the lean. Repairing the seat evens the car out.
How do I replace an E30 front shock absorber?
The shock and spring are removed from the strut with spring compressors. The brake caliper does not always need to be removed, but if the brake hoses are opened, the brakes are bled. The shock body is fixed, so only the cartridge is replaced. The big nut at the top may be rusted.
How do I replace an E30 rear spring at home?
Lift the wheel off the ground and detach the lower end of the shock absorber. With standard springs no compressors are needed: the spring is pried out with a crowbar, the new one is installed from the lower end and then the upper end is fastened.