[wspohn]

Background: I am an old racer (since 1973) and have recently purchased a 2007 Z4MC. It doesn't require much, but I am minded to try and optimize handling, and am thinking about replacing the factory springs and shocks with BC Racing units, based on my previous experience with that product on other cars.

Problem: I see alignment specs ranging over 2-3 degrees of camber and from 0 to significant toe.

I will not be tracking this car, but do enjoy being able to drive briskly on winding roads and am posting to ask what specs people have found optimal for this model for occasionally aggressive street driving.

Note: specs from solo events are almost always incorrect for street use - usually wanting less front roll stiffness and different toe/camber. Track racing specs backed off a bit are more likely to be a good compromise for what I will be using the car for.