i think my rear bearing is "humming" ....whats the total involvement for this? can i do this myself, are the parts really expensive and should i do both sides???

thanks for the help

 

sorry 99 a4 1.8t 91k miles auto with tiptronic

 

it goes a little something like this:

http://www.audiworld.com/tech/wheel33.shtml

 

Parts are about 55 dollars at ECS tuning. but you will have to have the bearing pressed by a garage.

 

You will need the 14mm allen wrench to remove the hub. The dealer quoted me 2 hours labour and it took me 6 hours to do the job because I went looking for the 14mm wrench all around the city. You will also need the press to press out the bearing, pay attention on how the bearing sits in the hub. Overall it is a 6 in level of difficulty.