What will cause side wear on a serpentine belt?

Side wear on a serpentine belt can be caused by improper alignment of the pulleys, leading to uneven tension and friction on one side of the belt. Additionally, worn or damaged pulleys can contribute to this issue by not allowing the belt to track correctly. Environmental factors, such as exposure to contaminants or extreme temperatures, may also accelerate side wear. Regular maintenance and inspection can help identify and rectify these problems before significant wear occurs.