Updated specs are available.
Front brake disc after-machining thickness — 270 mm rotor
This spec doesn't apply to the car you selected.
Not yet checked against the factory manual for your car's year. It's verified in the 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture); later manuals may differ.
20.8 mm (0.82 in)
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Applies only to a 270 mm outer-diameter front rotor; confirm the installed factory rotor size. Discard minimum and minimum after machining are separate limits. Machine on the vehicle; do not exceed the discard limit.
Applies to
- NB 2001–2005 (BP-Z3) — Other years in this family inferred from 2005 factory evidence with owner approval; actual-year verification is separate.
- NB 2004–2005 (BP-Z3-TURBO, 6MT) — Common 2005 front-brake inspection covers both rotor sizes. Diameter-specific limits apply only to the rotor diameter named in the record; 2004 is inferred.
- Verified in: 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)
Sources
- 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)Tier 1Page PDF p. 1282Printed: “Minimum thickness after machining using a brake lathe on-vehicle Disk plate outer diameter 270 mm {10.6 in} 20.8 mm {0.82 in}”
Also in Additional factory manual gap audit
- Front brake disc minimum thickness — 255 mm rotor
- Front brake disc after-machining thickness — 255 mm rotor
- Front brake disc minimum thickness — 270 mm rotor
- Front brake disc lateral runout limit
- Front brake disc thickness variation limit
- Front brake pad minimum remaining thickness
- Rear brake pad minimum remaining thickness
- Rear brake disc minimum thickness
- Rear brake disc after-machining thickness
- Rear brake disc runout limit
- Clutch pedal pivot bolt (NA6)
- Clutch pedal height (NA6)
- Clutch pedal free play (NA6)
- Clutch pedal total free play (NA6)
- Clutch pedal disengagement height — minimum (NA6)
- Clutch pedal height (NA 1.8)
- Clutch pedal free play (NA 1.8)
- Clutch pedal total free play (NA 1.8)
- Clutch pedal minimum disengagement height (NA 1.8)
- Clutch pedal height (NB1)
- Clutch pedal free play (NB1)
- Clutch pedal total free play (NB1)
- Clutch pedal minimum disengagement height (NB1)
- Clutch pedal height (NB2)
- Clutch pedal free play (NB2)
- Clutch pedal total free play (NB2)
- Clutch pedal minimum disengagement height (NB2)
- Clutch disc lining above rivet head — minimum
- Clutch disc runout — maximum
- Engine coolant type and antifreeze mixture (NA6)
- Engine coolant type and antifreeze mixture (NA 1.8)
- Engine coolant type and antifreeze mixture (NB1)
- Engine coolant type and antifreeze mixture (NB2)
- PPF installation height check — six-speed manual (NB2/Mazdaspeed)
- Engine mount bracket to block bolts — left and right (NA6)
- Catalytic converter flange nuts, both ends (NA 1.8)
- Engine idle speed — adjustment condition (NA6)
- Accelerator cable free play (NA6)
- Fuel injector resistance (NA6)
- ISC valve solenoid resistance (NA6)
- Fuel pump maximum pressure — blocked-outlet test (NA6)
- Fuel line pressure — engine off, pump operating (NA6)
- Intake manifold bracket bolts (NA6)
- Fuel line pressure — engine idling (NA6)
- A/C oil addition — new complete cooling unit (2005)
- Spark plug gap (NA6)
- Engine firing order (NA6)
- Base ignition timing (NA6)
- Spark plug gap (NA 1.8)
- Spark plug gap (NB1)
- Spark plug gap (NB2)
- Spark plug gap (Mazdaspeed)
- Power steering pump bracket to engine bolts (NA6)
- Front total toe-in (NA6)
- Front camber by wheel-center-to-fender height (NA6)
- Front caster by wheel-center-to-fender height (NA6)
- Front shock lower mounting bolt (NA6)
- Front crossmember to body mounting bolts and nuts (NA6)
- Rear total toe-in (NA6)
- Rear camber by wheel-center-to-fender height (NA6)
- Rear crossmember mounting fasteners to body (NA6)