[hookah66]

Your really don't need alignment unless you got into collision or hit a bad pothole. Front wheels adjustments are for toe in/out so are the rear wheels. Caster/camber are set by MacPherson struts at front and on the rear the multi link is pretty much stable. Unless you got wear issues on the tires, or your vehicle is pulling to one side there is no need for periodic wheel alignment as part of your maintenance schedule in my opinion. You do need tire rotation and balancing at least every 12 months or so. My e46 had 90k+ and I never done one. My '98 Outback with 150K was forever tacking straight. Now, to adjust to your personal preference you may desire a biased "toe out" for stable high speed tracking but again it is not to put your vehicle back to spec's.