Whiteline Radius Arm Lower Bushing – 2006-2011 3 Series BMW Models

Whiteline Radius Arm Lower Bushing – 2006-2011 BMW 3 Series Models

Restore BMW 3 Series Front End Geometry
The radius arm lower bushing on 2006-2011 BMW 3 Series models controls caster geometry and fore-aft suspension compliance. Worn or soft factory bushings allow the radius arm to deflect under braking and cornering loads, changing caster and contributing to the front end vagueness that develops on high-mileage BMW E90/E92 examples. Whiteline’s polyurethane replacement reduces this compliance, restoring precision and feedback.

DETAILS

• Radius arm lower bushing for 2006-2011 BMW 3 Series (E90/E91/E92/E93)
• Polyurethane compound for reduced compliance
• Improves caster geometry stability under braking and cornering loads
• Direct-fit replacement — no modifications required
• Restores front end precision on high-mileage examples

Radius Arm Geometry on the E90 Platform
The E90-generation 3 Series front suspension uses a radius arm to control fore-aft wheel location. The bushing at the chassis end of this arm controls caster — the rearward tilt of the steering axis. When this bushing wears and becomes compliant, caster changes under load and the front end loses the sharp, communicative feel BMW 3 Series cars are known for.

High-Mileage BMW Reality
E90/E92 3 Series examples are getting older and higher-mileage. Radius arm bushing wear is a common and well-documented issue on these cars — it’s one of the first things to check when an E90 loses its signature steering feel. Whiteline’s polyurethane replacement is a direct fix.

Broader BMW 3 Series Coverage
This bushing covers sedans, tourings, coupes, and convertibles in the E90/E91/E92/E93 family from 2006-2011. Confirm your specific model is included before ordering.

Why Choose Whiteline

Whiteline has been engineering suspension components from their facility in Australia since 1979. Every product in their catalog is developed with a clear goal: measurable improvement in handling, stability, and tyre contact. Whiteline’s polyurethane bushings, sway bars, control arms, and alignment correction kits are engineered using finite element analysis and validated on track before they reach the market. Their components are direct-fit, bolt-on solutions designed for enthusiasts who want real performance gains without fabrication or custom work.

The RallySport Take

If your E90 or E92 has lost the front end sharpness that made BMW 3 Series cars legendary, start with the radius arm bushings. This is one of the most common causes. Budget an afternoon for the job — bushing replacement is not complicated but does require the correct press tools and clean installation technique. Apply grease to all polyurethane-to-metal interfaces and assemble at ride height for correct bushing set. The improvement in chassis feel is immediate and the polyurethane will outlast whatever rubber is in there now.

What’s in the Box

• Radius arm lower bushing for 2006-2011 BMW 3 Series (E90/E91/E92/E93)
• Polyurethane compound for reduced compliance
• Improves caster geometry stability under braking and cornering loads
• Direct-fit replacement — no modifications required
• Restores front end precision on high-mileage examples

Fitment