Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to maintain a car at 50 , 000 miles [title] Rotate and balance your tires every 5 , 000 miles (8 , 000 km). [step] The best or youngest tires should go on the front of your vehicle. When rotating tires from the back to the front, its important to keep tires on the same side of the car.

Ending1: [title] Inspect tires for uneven wear and check the tire pressure every few months. [step] Always have your car professionally aligned when you change your tires. Ending2: Rotate and balance your tires every 5 , 000 miles (8 , 000 km). [title] Lean on your shoulders to keep from rolling. Ending3: That way you can see which lane each wheel is turning in while simultaneously keeping the tires in the same lane at the same speed. [title] Put the car into gear instead of shifting. Ending4: Changing your tire positions every 5 , 000 miles (8 , 000 km) impacts the drive and even the wheel, so ensure that the tires on both wheels and driving wheels at the same time. [title] Raise your tires up and down as you steer around major turns.

Answer format: ending1/ending2/ending3/ending4