Why do the rear bearings have to be replaced?

Rear bearings need to be replaced when they show signs of wear, such as noise, excessive play, or difficulty in rotation, which can lead to poor vehicle handling and safety issues. Over time, exposure to heat, dirt, and moisture can degrade the bearing material, causing it to fail. Regular inspection and timely replacement help maintain optimal performance and prevent further damage to the vehicle's drivetrain. Neglecting to replace worn bearings can result in more costly repairs down the line.