Final answer:
The minimum tread depth for front tires is 2/32 of an inch (1/16 inch), and maintaining proper air pressure in car tires ensures a smoother and safer ride, better gas mileage, and slower tire wear. The recommended air pressure is usually between 32-35 psi, listed in the owner's manual or on the car door placard.
Step-by-step explanation:
The minimum tread depth for front tires is 2/32 of an inch (1/16 inch), which is option 1. Tires need to have a sufficient tread depth to ensure proper traction and safety on the roads. When the tread wears down to this level, it is legal to replace the tires. The minimum legal tread depth is designed to provide enough space for water to escape from under the tire, reducing the risk of hydroplaning and improving grip.
While maintaining proper tire tread depth is essential, it is also important to maintain the correct air pressure in your car tires. Doing so can lead to a smoother and safer ride, better gas mileage, and slower tire wear. The recommended air pressure for a vehicle will vary but is usually between 32-35 psi and can be found in the owner's manual or on a placard inside the driver's door. Remember that the tire's sidewall lists the maximum pressure, not the recommended one, and to always check the tire pressure when the tires are cold for an accurate reading.