Service Record Example: Tire Wear Map and Pressure Check

Recording tread depth at inner, center, and outer positions on every tire reveals wear patterns that one minimum number hides.

Educational case studyIntermediateEvidence-led

Recording tread depth at inner, center, and outer positions on every tire reveals wear patterns that one minimum number hides.

Why this matters

The value of this case is the order of evidence and the verification step. The same symptom on another vehicle may have a different cause.

Evidence to capture first

  • Cold pressure and placard specification
  • Three-position tread depth
  • Damage, age marking, and rotation position
  • Alignment or suspension clues

A disciplined path

  1. Measure cold
  2. Map each location
  3. Correct pressure
  4. Recommend rotation, alignment, or replacement based on the complete pattern

Decision point

Tire replacement and pressure decisions should follow placard, condition, age, and measured tread—not appearance alone.

Source desk

Use current model-specific service information for specifications, connector locations, disabling procedures, and tightening values. The following public resources support the broader safety or system context used in this guide.