Originally Posted by
mlytle
i am not familiar with the e39 front bearings, but if they are at all like the e30, 36, 46's, the bearing and hub are one unit and you don't need any expensive tools to change the assembly. pretty simple job.
also easy to see if a front wb needs replacement. jack car up, listen for a grunching noise when you spin the wheel. grab the top and bottom of the tire and try to rock it back and forth. any noise or movement and the bearing is bad. you can also check by driving the car in 20-30mph circles with the windows down. if you hear any noises from the front wheel on the outside of the turn, the bearing is toast.