The presence of metal or paint flakes around the wheel nuts means that
- the brake pads are in excellent condition.
- the tire pressure is optimal.
- the wheels are perfectly aligned.
- there is potential wheel movement needing attention. ✓
Answer: D. there is potential wheel movement needing attention.
Metal or paint flakes around the wheel nuts mean there is potential wheel movement that needs attention.
Why this is the answer
The commercial vehicle handbook lists metal or paint flakes around the nuts as a disk wheel finding to investigate. It says those flakes may indicate wheel movement, and when you find this kind of item you should investigate and decide whether it needs immediate attention. That supports treating the flakes as a sign of possible wheel movement that needs checking, rather than assuming the wheel, tire or brakes are fine.
Why the other answers are wrong
- A. the brake pads are in excellent condition. — Flakes around the wheel nuts say nothing about brake pad condition in the passage; they point to possible wheel movement instead.
- B. the tire pressure is optimal. — The handbook does not connect flakes around the nuts to tire pressure, so this does not support an optimal-pressure conclusion.
- C. the wheels are perfectly aligned. — Nothing in the passage says flakes around the nuts show perfect wheel alignment; they are listed as a wheel-movement clue.
Remember it
Flakes at the nuts are a wheel-check clue, not a paint detail.