What is necessary for optimal vehicle tire performance?

Proper tire inflation is crucial for optimal vehicle tire performance because it directly affects the vehicle's handling, fuel efficiency, and tire lifespan. Tires that are under-inflated can lead to increased friction, which can cause tires to wear more quickly and may lead to blowouts. Over-inflated tires can result in poor grip on the road and a harsher ride. Maintaining the correct tire pressure ensures that tires perform as intended, providing better traction, stability, and control, which are essential for safe driving.

The other options suggest practices that do not directly contribute to optimal tire performance. Using only brand-name tires does not guarantee that they will be properly inflated or suitable for a specific vehicle. Buying tires twice a year is unnecessary for most drivers, as tires can last for many years if maintained properly. Lastly, no maintenance is needed is a misconception, as tires require regular checks for pressure, tread wear, and overall condition to ensure safe driving.