The BMW E46 has been plagued with an unfortunate weak point since the birth of it's chassis. The rear axle carrier panel is highly susceptible to cracking and tearing due to varying design flaws.  From continuous transition between on-off throttle, the panel begins to fatigue due to a pitching movement of the rear subframe.

To strengthen the rear subframe mounting points on the rear axle carrier panel, we utilize thoughtfully engineered steel reinforcement plates from PSDesigns. These plates are welded to the chassis after any chassis repairs are completed.  The plates provide a stronger and larger surface area for the load to be dispersed.  Combined with stronger subframe bushings, we have a sound solution that keeps the rear chassis in tact and ready for reliable performance.

Our rear subframe reinforcement service includes the following:

  • Full disassembly of the rear assembly

  • Degreasing and cleaning of the rear axle carrier panel

  • Repair of any minor and common cracks (more severe cracks require additional cost)

  • Welding in rear subframe reinforcement plates (parts are additional cost)

  • Three-stage undercarriage coating to prevent corrosion

  • Inner cavity anti-corrosion coating

  • Subframe bushing replacement (parts are additional cost)

  • Reassembly of the rear assembly

  • Brake fluid bleed

  • Chassis alignment

With the rear assembly removed, there are many additional services that can be conducted at a lower cost due to overlap in labor with the rear assembly removed.

Feel free to inquire about the following optional services:

  • Differential bushings and mount

  • Outer upper and lower ball joints

  • Rear trailing arm bushings

  • Upper inner control arm bushing

  • Lower control arm

  • Rear sway bar

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