Which statement best describes maintenance problems?

• A. They can cause uneven wear on tire tread
• B. They improve engine performance
• C. They rarely affect tires
• D. They have no impact on vehicle safety

Answer: (A)

Maintenance problems affect how tires wear. When parts that control alignment, suspension, or tire inflation are off, the tire doesn’t sit evenly on the road, leading to uneven tread wear. Misalignment tends to wear one edge more than the other, while incorrect inflation changes the wear pattern—overinflation wears the center, underinflation wears the edges. This uneven wear shortens tire life and can reduce grip, increase vibrations, and make handling less predictable, which can compromise safety. Regular maintenance—keeping tires inflated to the correct pressure, rotating tires, and checking alignment and suspension—helps prevent uneven wear and keeps handling safer. The other statements aren’t accurate because maintenance problems don’t improve engine performance, they do affect tires, and they can impact safety.