Cold pressure, placard specification, tread measurements across the tire, damage, age, and loading matter more than the number molded as maximum on the sidewall.
Why this matters
Understanding the system principle makes the test result more useful and reduces unnecessary disassembly or parts replacement.
Evidence to capture first
- Door-jamb placard
- Cold pressure at each tire
- Inner, center, and outer tread depth
- Cuts, bulges, objects, and age marking
A disciplined path
- Measure before driving
- Adjust to the placard for the current load
- Map tread by position
- Recheck caps and inspect the spare or mobility kit
Decision point
A damaged, bulging, cord-exposed, or rapidly losing tire should not be driven for further testing.
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.

