Hi,does anyone know what there like and are they expensive???theres a ticking and like a whinen bearing noise coming from somewhere in my 01 b4 legacy,i got the wheels and all the obvious checked and nothing.its been in the car since i bought it and seems to be gettin worse,its not engine trouble as ive replaced the engine 4 months ago with a fresh imported engine,by the way its an auto/tiptronic legacy!this noise is very erritating!!any info???