Showing specs for all NA & NB Miatas

Rear brake pad minimum remaining thickness

2.0 mm (0.08 in), minimum

Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Inspect remaining friction material through the caliper inspection hole; exclude the backing plate.

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.
  • Verified in: 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)
Sources
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)Tier 1
    Page PDF p. 1270
    Printed: “Thickness 2.0 mm {0.08 in} min.”

Also in Additional factory manual gap audit