These types of discussions I find superfluous. The spoilers may produce downforce, but be honest, we have them mostly for styling. In the examples given, you have to be driving 124 mph or 180 mph to get those results. I'm not saying I haven't done that, but if I do, I'm not really thinking about downforce. You are not going to do that commuting to work, going grocery shopping, or even cruising on a weekend. I would rather have someone drool over the looks of my car than say, ”Where’s that idiot going?” If you are racing on a road course, then you can reap the benefit; otherwise, a spoiler is just another passenger. IMHO Glenn