Final answer:
In cold weather, it's crucial to check the tire tread depth regularly and maintain the recommended tire pressure, which should be measured when the tires are cold. Adjusting for temperature changes is important for safety and efficiency.
Step-by-step explanation:
In cold weather, it is vital to check the tire tread depth regularly rather than increasing the tire pressure or unnecessarily replacing the tires. The tread depth is essential for maintaining good traction on icy or wet roads. It's important to maintain the recommended tire pressure as specified by the manufacturer, which is usually found in the owner's manual or on a sticker inside the driver's door. This pressure should be measured when the tires are cold since driving heats up the air inside, increasing the pressure. Adjusting for temperature changes in air pressure will ensure a safe and fuel-efficient ride.
Regarding friction, it is also desirable in situations such as sports, where shoes with good grip improve an athlete's performance, or in machinery, where certain components require friction to operate effectively.