i Chris, I have had the same problems on my 740. What can happen is that the front wheels can be correct relative to each other but have been adjusted more on one side that the other, this would cause one wheel to be able to create a tighter turning circle, hence all the scrubbing, probably more noticeable on loose gravel. I had a garage carry out 4-wheel alignment on mine, and the difference was unbelievable, it handled like a totally different car. Steve.