What factor does over-inflation primarily affect on tires?

• A. Tread life
• B. Fuel consumption
• C. Traction
• D. Sidewall strength

Answer: (C)

Over-inflation of tires primarily affects traction. When tires are over-inflated, the contact area between the tire and the road surface is reduced. This means that less rubber is in contact with the road, which can compromise grip. Reduced traction can lead to decreased control of the vehicle, especially during turns, braking, or in wet conditions, potentially increasing the risk of skidding or accidents.

While other factors like tread life, fuel consumption, and sidewall strength can also be influenced by tire pressure, the most immediate and critical impact of over-inflation is on traction. It is essential to maintain the proper tire pressure for optimal contact with the road, thereby ensuring safety and performance.