Inspect

Tread wear indicators appear on tire tread surfaces when 0.031 in (0.8 mm) or less of tire tread remains. Always replace tires before the tread wear indicators appear on the surface of the tire.

See Maintenance → INSPECT TIRES → General → Tread Wear Indicator: Michelin Tires. The locations of tread wear indicators are identified by the marks on the tire sidewalls.

When to Replace Tires

New tires are needed if:

Tread wear indicators become visible on the tread surfaces.
Tire cords or fabric becomes visible through cracked sidewalls, snags or deep cuts.
A bump, bulge or split in the tire.
A puncture, cut or other damage to the tire that cannot be repaired.