To each his own, but I say that anything lower than stock is too low, unless the lowering is a byproduct of a modification that improves performance. A while back, I had a Subaru with a suspension kit that resulted in a slight lowering. The modification resulted in such a huge improvement in handling that I was OK with the lowering. In fact, it even looked good to my eye because I knew that it was a bona fide modification. Otherwise, I like stock ride height. IMHO.