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M3 / M4 Lowering springs Install Guide

Your M3 / M4

Pick your year to see what fits.

This page covers the US M3 / M4.

Lower and flatter
Hard$395–$4504 hrs
All M3 / M4 mods

Why do it

Drops the car and cuts roll.

Tools you'll need

Starting out? See our budget tool list.

Parts to buy

Double-check fitment before buying. We may earn a commission when you buy through these links, at no extra cost to you.

Before you start

  • A cheap spring compressor can fail. Use a good one, or have a shop swap the springs.
  • Book an alignment before you start.
  • A cheap spring compressor can fail. Use a good one, or have a shop swap the springs.
  • Book an alignment before you start.

Steps

  1. Pull the front strut

    • Loosen the end link and unbolt the strut.
    Watch this step (Salt City Euro, on an M3) (2:15–4:28)

  2. Swap the front spring

    • Compress and swap it.
    Watch this step (4:28–6:42)

  3. Refit the front

    • Realign the bracket and bolt it up.
    Watch this step (6:42–7:47)

  4. Do the rears

    • Remove the spring cups and swap the rears.
    Watch this step (8:56–10:05)

  5. Pull the front strut

    • Loosen the end link and unbolt the strut.
    Watch this step (Salt City Euro, on an M3) (2:15–4:28)

  6. Swap the front spring

    • Compress and swap it.
    Watch this step (4:28–6:42)

  7. Refit the front

    • Realign the bracket and bolt it up.
    Watch this step (6:42–7:47)

  8. Do the rears

    • Remove the spring cups and swap the rears.
    Watch this step (8:56–10:05)

How to know it worked

Did this guide work for you?

Safety first

  • Park on flat ground, set the parking brake and chock the wheels.
  • Never get under a car held up only by a jack. Use jack stands.
  • Let the engine and exhaust cool first.
  • Disconnect the battery before unplugging electrical parts.
  • Wear safety glasses.
  • If something doesn't match your car, stop and ask a shop.

Follow your part's instructions and your service manual's torque specs.

Lowering Spring install guides for other cars

More M3 / M4 mods