Which of the following is NOT a consequence of improper tire pressure?

The correct answer is that increased fuel efficiency is not a consequence of improper tire pressure. Proper tire pressure is crucial for maintaining optimal fuel efficiency in vehicles. When tires are under-inflated, they create more rolling resistance, causing the engine to work harder and consume more fuel. Conversely, over-inflated tires can cause uneven wear and a rough ride, leading to decreased control of the vehicle.

In terms of extended tire life, maintaining the correct tire pressure helps ensure even wear and prolongs the lifespan of the tires. Similarly, tires at the proper pressure contribute to enhanced safety by providing better grip, handling, and overall vehicle stability. Poor vehicle control, as mentioned, is a direct result of improper tire pressure, as it can lead to blowouts, skidding, and reduced traction, all of which significantly compromise safety on the road. Hence, the only correct statement is that improper tire pressure does not lead to increased fuel efficiency; rather, it generally has the opposite effect.