Final answer:
The number one cause of premature tire wear is incorrect tire alignment, followed by improper tire inflation and lack of tire rotation.
Step-by-step explanation:
The number one cause of premature tire wear is incorrect tire alignment. When the tires are not properly aligned, they may not make proper contact with the road surface, leading to uneven wear. For example, if the alignment is off and the tires are angled inward or outward, it can lead to excessive tire wear on the inside or outside edges of the tires.
Another common cause of premature tire wear is improper tire inflation. When the tires are either underinflated or overinflated, it can cause uneven wear. Underinflated tires tend to wear more on the outer edges, while overinflated tires wear more in the center.
In addition to alignment and inflation, tire rotation is also essential for ensuring even wear. Regularly rotating the tires can help distribute the wear more evenly and extend the overall lifespan of the tires.