A complete tire inspection treats the tire as a safety component, a measurable wear surface and a record of vehicle operating conditions.
A complete tire inspection treats the tire as a safety component, a measurable wear surface and a record of vehicle operating conditions.
The inspection should move from identification to measurement, visual condition, diagnosis and documentation. Looking only at tread depth can miss sidewall damage, mismatching, hidden inner-edge wear or evidence of underinflation.
Separate ordinary wear from structural damage. A tire can have adequate measurable tread and still require removal because of a bulge, exposed reinforcement, suspected separation or an unapproved repair.
Correct the vehicle or maintenance condition that produced the evidence, then verify the result. When structural integrity or repairability is uncertain, use the tire manufacturer procedure and applicable local requirements.
What the finding means
The inspection should move from identification to measurement, visual condition, diagnosis and documentation. Looking only at tread depth can miss sidewall damage, mismatching, hidden inner-edge wear or evidence of underinflation.
Separate ordinary wear from structural damage. A tire can have adequate measurable tread and still require removal because of a bulge, exposed reinforcement, suspected separation or an unapproved repair.
Possible contributors
A visible pattern or measured condition is evidence, not proof of one component failure. Compare all tire positions and combine the tire findings with pressure, alignment, wheel-end and service-history data.
| Condition to consider | Role | Verification |
|---|---|---|
| Incorrect pressure or repeated pressure loss | Possible contributor | Verify with measurements and vehicle history |
| Alignment or suspension geometry | Possible contributor | Verify with measurements and vehicle history |
| Wheel, bearing or damping condition | Possible contributor | Verify with measurements and vehicle history |
| Impact, penetration or heat damage | Possible contributor | Verify with measurements and vehicle history |
| Age, storage and environmental exposure | Possible contributor | Verify with measurements and vehicle history |
Workshop inspection procedure
- Confirm size, service description and tire position
- Record cold pressure before correction
- Measure several grooves at multiple circumferential points
- Inspect tread, shoulders, both sidewalls, bead, valve and wheel
- Classify urgency and document the recommendation
Pressure, tire position, measurements, photographs and vehicle condition should be recorded before correction. That evidence makes the recommendation understandable and supports future comparison.
Service decision and follow-up
Correct the vehicle or maintenance condition that produced the evidence, then verify the result. When structural integrity or repairability is uncertain, use the tire manufacturer procedure and applicable local requirements.
Inspect the opposite tire and the other axle before finalizing the recommendation. When corrective work is performed, set a verification point so the workshop can confirm that new wear is no longer progressing abnormally.
Tread depth does not override a bulge, exposed reinforcement, suspected separation, severe run-flat history or damage outside an approved repair procedure.
Frequently asked questions
Is minimum tread depth enough to approve a tire?
No. A complete inspection also checks sidewalls, shoulders, punctures, repairs, age, inflation, wheel condition and signs of structural damage.
Should all four tires be compared?
Yes. Comparing positions can reveal axle, pressure, rotation, alignment and service-history differences.
When should the tire be removed for internal inspection?
Remove it when puncture damage, air loss, impact history, separation or previous repair condition cannot be evaluated externally.
What makes an inspection report useful?
It should identify tire position, actual measurements, visible conditions and the recommended next action without overstating the diagnosis.
Technical review edition · Published 17 July 2026.