Final answer:
Tires should maintain a minimum of 1/16 inch tread depth for safety. Proper tire pressure improves the ride's smoothness, safety, and gas mileage, and it should match the manufacturer's recommended PSI.
Step-by-step explanation:
Tires should have a minimum of 1/16 inch tread depth on road surface. This depth is considered a safety standard to ensure adequate tire grip in various driving conditions, helping to prevent accidents.
It's essential to regularly check the tire tread depth as part of vehicle maintenance to ensure the ride is smoother and safer, and also to optimize gas mileage and reduce tire wear. Tire pressure should match the manufacturer's recommendation, not the maximum pressure indicated on the tire. Correct tire pressure contributes to tire longevity, better vehicle performance, and improved safety on the road.