Frame Reference Point Description - Asymmetrical
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
When two corresponding reference points have different measurements, they are called asymmetrical. If you perform a quick cross check and the measurements are unequal, you should check the dimension charts in order to find out if the measuring points are symmetrical or asymmetrical.