2700 miles on mine. Drivers side are good passenger ones need to be replace. I also replace the passenger side bearings at around 1800 miles. Drivers side is still good. I know for me I tend to push mine harder when cornering to the passenger side. I also try to put the passenger side in mud and try to leave the drivers side dry, where thats possible. I would say these two are the reasons, for me, the passenger side bearings and bushings wear quicker.