• Over time the CV boots fatigue and tear from bending back and forth every time the car goes around a corner.

   • Most of the time the outer CV boot is the one that tears, the inner CV boot usually lasts the life of the axle because it does not have to flex as much as the outer. CV boots can also be damaged by road hazards since they are close to the ground.

   • When a CV boot tears it allows the grease to get out and the dirt to get in. The dirt and grit from the road mix with the grease to form an abrasive paste that ruins the CV joint.

   • If a torn CV boot is noticed and repaired soon enough, then it can be replaced to prevent damage to the CV joint. A torn CV boot is the most common cause of CV joint failures.