Yea, my 1995 M reg pulled hard to the right with the steering wheel straight and drifted slowly to the left when let go. The steering wheel was well on the piss!
I got the tracking sorted at a local garage for about 20 quid. When speaking to the guys at the garage they told me that not only do roads camber to allow rain water run off but also most cars are set up to drift "slowly" to the left. This is so that if/when you let go of the the steering wheel your car drifts "slowly" to the curb and not into on coming traffic.
I suggest that if your tracking is out then get it sorted. Poor tracking not only increases tyre wear but also affects the handling of your car.
Trust me, my car felt alot more lively in the front end after getting the tracking sorated.
Great roundabout fun!