Originally Posted by Alekshop
Depending on how often you go to the track and depending on how you drive your car, we recommend to recheck alignment every 3-4 months. Sometimes it takes one pothole to mess up your settings ...
If you have adjustable camber plates and change your camber pretty often between street and track settings it might be a good idea to put it on a rack sometime to see if it's still within the specs.
This is my first BMW, so I'm not sure what the reference point is for checking. My last car was a WRX STI, and it seemed like the alignment was always off.
My car is completely stock, and I've been to Barber 4 times in the last 6 months, and I definitely get the car a little sideways both on track and on empty streets now and then, and didn't know if that kind of activity could get the toe off spec....although I can't tell from driving it...ie the steering wheel is straight and it tracks true.