I have a 01' A4 30v Q with 70,200 miles on the clock and am in the process of changing out my 2nd rear wheel bearing,drivers side failed at 50k and now passenger side at 71k..had alignment done twice between 44k and 69k...Is this normal or is there something wrong ??? -- Bing '01 A4 2.8QM 30v '93 ur//S4