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Brake Lines & Hoses

The E46 uses a combination of rigid metal brake lines and flexible rubber hoses. The rubber hoses are a wear item and can swell under pressure, reducing brake feel.

  • Check rubber hoses for cracks, swelling, or leaks
  • Inspect metal lines for corrosion (especially in salt-belt climates)
  • Look for fluid seepage at connections

One of the most popular and effective brake upgrades:

  • StopTech: DOT-compliant stainless lines
  • Goodridge: Stainless braided, various colors
  • ECS Tuning: Budget stainless option

Benefits:

  • Firmer pedal feel
  • More consistent braking
  • Longer lifespan than rubber
  • Improved heat resistance