TL;DR
On a 25–30-year-old E36, every rubber bush has hardened or cracked and the dampers are tired. A complete refresh brings back the car’s precision. Do it as a set, fit quality parts, tighten rubber-bushed joints with the car at normal ride height, and finish with a four-wheel alignment to the factory values below.
How the E36 suspension is built
- Front: MacPherson struts. Each lower control arm has a ball joint to the subframe crossmember, a ball joint to the steering arm, and a rear bushing carrier bolted to the body. An anti-roll bar connects to the control arms via links.
- Rear: multi-link: per side a trailing arm (on its front bushing and bracket) plus an upper and a lower control arm to the final-drive carrier, with separate spring and shock absorber.
What wears first
| Part | Typical symptom |
|---|---|
| Front control arm rear bushings | Vague steering, wobble or shimmy under braking |
| Front control arm ball joints | Clunks, play in the wheel |
| Anti-roll bar links | Knocking over bumps |
| Strut top mounts | Knocks from the top of the strut, steering noise |
| Front struts and rear dampers | Floaty ride, poor control on bumps |
| Rear trailing arm bushings (RTAB) | Rear end steering itself on throttle changes or bumps |
| Rear shock mounts | Knocking from the rear |
| Rear subframe and final-drive mounts | Clunks on take-off, rear vagueness |
Front
- Struts: replace in pairs, with new top mounts, bump stops and dust boots. The strut’s upper nut must only be loosened or tightened with the spring safely compressed in a proper spring compressor.
- Control arms: complete arms with new ball joints are the cleanest fix; fit new rear bushings and carriers at the same time. Bushings are best tightened with the car at ride height.
- Anti-roll bar links: new links remove most front knocks.
| Fastener (Bentley) | Torque |
|---|---|
| Strut assembly to strut tower (self-locking nuts) | 24 Nm |
| Upper strut mount to strut shaft (self-locking nut) | 65 Nm |
| Control arm ball joint to subframe crossmember | 85 Nm |
| Control arm ball joint to steering arm | 65 Nm |
| Control arm bushing carrier to body | 47 Nm |
| Anti-roll bar link to control arm | 42 Nm |
| Outer tie rod end to steering arm | 45 Nm |
| Road wheel to hub | 100 ± 10 Nm |
Rear
- Dampers and springs: replace dampers in pairs. Compare ride height side to side: a sagging spring shows up as a lean.
- Shock absorber mounts: fit new upper mounts with the dampers.
- Trailing arm bushings: see the RTAB guide.
- Upper and lower control arms: complete arms with fresh bushings avoid pressing work.
- Subframe and final-drive mounts: see the rear subframe guide.
| Fastener (Bentley) | Torque |
|---|---|
| Shock absorber to trailing arm (car at normal loaded ride height) | 77 Nm |
| Shock absorber to upper mount | 14 Nm |
| Shock absorber upper mount to body (M8 self-locking nuts) | 24 Nm |
| Trailing arm to front bracket | 110 Nm |
| Trailing arm bracket to body | 77 Nm |
| Upper or lower control arm to trailing arm (M12) | 110 Nm |
| Upper or lower control arm to final drive carrier (M12) | 77 Nm |
Bentley specifies tightening the shock-to-trailing-arm bolt with the car in its normal loaded position. The same principle protects every rubber bushing: tighten at ride height, not with the suspension hanging.
Factory alignment specifications (Bentley)
Front
| 318i / 325i | 318i / 325i sport suspension | |
|---|---|---|
| Toe (total) | 0°18′ ± 8′ | 0°18′ ± 8′ |
| Camber, to 1995 | −0°40′ ± 30′ | −0°58′ ± 30′ |
| Camber, 1995 on | −0°30′ ± 30′ | −0°51′ ± 30′ |
| Caster (at 10° wheel lock) | 3°41′ ± 30′ | 3°50′ ± 30′ |
Rear
| 318i / 325i | 318i / 325i sport suspension | |
|---|---|---|
| Toe (total) | 0°24′ ± 6′ | 0°24′ ± 6′ |
| Camber | −1°40′ ± 15′ | −2°0′ ± 15′ |
Ask the alignment shop for a before-and-after printout. More aggressive settings for track use are covered in the geometry guide.
Coilovers or a factory-style refresh?
For a road car, quality dampers and springs with new bushings give the best result for the money. If you want to lower the car, buy dampers designed for the lower ride height (or a matched coilover kit from an established maker), not just shorter springs on standard dampers. Cheap coilovers are rarely an improvement on a good factory-style refresh.
Buying parts
Use established suspension brands (the original equipment makers and their equivalents), and look up part numbers by VIN on RealOEM: front and rear parts differ between standard, sport and M3 suspension.
