Top Down Maintenance (For Soft Tops & Hard Work) logo Top Down Maintenance
Skip to content

Brake pad inspection & replacement

Inspect and replace Mazda MX-5 NB brake pads safely, with attention to rear pad fitment variants and proper post-install bedding checks.

Difficulty
Intermediate
★★★☆☆
Est. Time
60-150 min
Models
NB1 & NB2
Last Updated
2026-03-12

Before You Start / Safety

  • Work on a level surface, use wheel chocks, and support the car on stands.
  • Wear eye protection and gloves.
  • Confirm brake fluid reservoir level before compressing pistons.

Warning: “If it’s full, some fluid needs to be removed. This will help avoid spillage due to overflow when compressing the brake caliper piston.” https://www.autozone.com/diy/brakes/how-to-replace-brake-pads-and-rotors

Required Tools

  • Jack, axle stands, wheel chocks
  • Socket set and breaker bar
  • Caliper piston tool (rear may require wind-back style depending on caliper design)
  • Wire brush, brake cleaner, rags
  • Torque wrench

Required Parts / Fluids

  • Front/rear pad sets that match your NB brake package
  • New hardware kit (clips/springs/shims) where available
  • Brake cleaner
  • Small amount of high-temp brake lubricant for approved contact points

Fast fitment check before opening parts bags

Compare the new pads against removed pads for:

  • backing-plate outline,
  • pad-ear shape,
  • thickness,
  • wear-sensor tab location (if present),
  • shim/clip layout.

If one detail does not match, stop and verify package fitment before reassembly.

Model-specific notes (NB1 vs NB2)

  • NB brake hardware and pad fitment can vary by year/trim/brake package.
  • Verify pad shape/hardware against removed parts before full reassembly.

Manual-reference quote: “The Manuals are in PDF format. You can use Adobe Reader to read or print them.” https://www.mellens.net/mazda/

Community quote: “My understanding is that all 03-05 came with ss, and therfore big brakes.” https://forum.miata.net/vb/showthread.php?t=426617

Step-by-Step Procedure

1) Inspect first, replace second

Measure remaining friction material and check both sides of each axle for uneven wear (sticking slider/piston clues).

Practical replacement threshold:

  • around 3 mm or less friction material: plan immediate replacement,
  • inner pad much thinner than outer pad: inspect slider pins/piston movement before installing new pads.

2) Remove wheel and caliper carefully

  • Crack wheel nuts loose before lifting.
  • Raise and support the car at proper jack points.
  • Remove caliper fasteners and support caliper with a hook/wire so hose is not strained.
  • Keep left/right hardware separated on a clean tray to avoid mixing clips/shims.

3) Compare old and new pads before installation

Dry-fit and compare backing-plate shape, slot/tab geometry, and hardware arrangement.

Community confirmation quote: “The issue is… ask for set of standard pads… the shop-man ask if… ‘akebono or sumitomo?’” https://forum.miata.net/vb/showthread.php?t=664233

4) Retract piston correctly

Retract piston with the correct tool/method. Monitor brake fluid reservoir to avoid overflow.

NB rear-caliper note:

  • many rear calipers require a wind-back style tool,
  • forcing a screw-type rear piston straight in can damage the mechanism.

5) Clean and prepare contact points

Clean caliper bracket contact areas and install hardware/clips correctly. Apply brake lubricant only where pad ears/shims are designed to slide.

6) Install pads and reassemble

Install pads, refit caliper, and torque all service fasteners to your year/VIN FSM specification.

7) Perform controlled bedding

After reassembly and pedal priming, bed pads using controlled moderate stops and cool-down.

Simple street bedding pattern:

  1. 5-6 moderate stops from ~60 to 20 km/h (40 to 12 mph),
  2. avoid complete standstill with very hot brakes,
  3. drive 10-15 minutes with minimal braking for cool-down.

High-risk quote: “The break-in procedure is critical to brake performance.” https://www.powerstop.com/resources/brake-pad-break-in-procedure/

Torque Specs / Capacities

  • Torque values vary by front/rear and NB year/caliper setup.
  • Use factory service data for your exact model year and brake package.

Verification / Post-service checks

  • Firm pedal before driving
  • No fluid leaks, no hose twist, no pad/hardware rattle
  • Straight, stable braking on road test
  • Re-check wheel lug torque after short drive/heat cycle

Practical mistakes to avoid

  • Do not press brake pedal with caliper removed and no pad/disc restraint.
  • Do not mix old and new hardware clips across corners.
  • Do not lubricate pad friction material, rotor faces, or stud/taper seating surfaces.
  • Do not skip bedding and immediate post-service leak/pedal checks.

Sources

  1. Mellens.net — Mazda Miata Factory Service Manuals. Retrieved 2026-03-12. https://www.mellens.net/mazda/
  2. AutoZone — How to Change Brake Pads and Rotors: Step-by-Step Replacement Guide. Retrieved 2026-03-12. https://www.autozone.com/diy/brakes/how-to-replace-brake-pads-and-rotors
  3. PowerStop — What is the Break-In Procedure? Retrieved 2026-03-12. https://www.powerstop.com/resources/brake-pad-break-in-procedure/
  4. Miata.net Forum — [NB] 2003 Miata Rear Brake Pad and Caliper Confusion w/ pictures . . Retrieved 2026-03-12. https://forum.miata.net/vb/showthread.php?t=426617
  5. Miata.net Forum — [NB] Are the NB brake pads all the same? Retrieved 2026-03-12. https://forum.miata.net/vb/showthread.php?t=664233