Why might a vehicle show signs of uneven tire wear?

A vehicle may exhibit signs of uneven tire wear predominantly due to improper alignment. When a vehicle's wheels are misaligned, it can cause the tires to make uneven contact with the road surface. This uneven contact can lead to specific wear patterns, such as cupping, bald spots, and excessive wear on one side of the tire. Proper alignment ensures that all four wheels are pointed in the same direction and allows the tires to wear evenly and last longer, optimizing handling and performance.

In contrast, excessive air conditioning use, low engine oil levels, and correct tire pressure do not directly contribute to uneven tire wear. Improper alignment is the primary factor leading to this issue, as it directly affects how the tires interact with the road under various driving conditions. Regular maintenance and inspections can help identify alignment issues early, preventing uneven wear and prolonging tire life.