Which inspection step is likely to catch a dual tire diameter mismatch before a run?

• A. Pre-trip inspection
• B. Fuel check
• C. Cabin cleanliness check
• D. Post-run debrief

Answer: (A)

Checking tires before you go is essential, because a dual tire diameter mismatch is a safety issue that can cause uneven load, excessive heat, and a risky blowout on the road. The pre-trip inspection is where you verify critical components first: you inspect tire size markings and ensure the two tires on each axle are the same size and type, with matching tread and condition. You also confirm proper inflation and look for cuts, bulges, or uneven wear. Catching a diameter mismatch during this pre-trip prevents a dangerous failure during the run. Fuel checks, cabin cleanliness, and post-run debrief don’t address tire size compatibility before a trip in the same way.