Ford—and other manufacturers—used plain steel lug nuts that have cheesy stainless steel caps over the ends, that were supposed to resemble chrome. After a couple bouts with tire shop impact guns, the caps get all battered and CANNOT BE REMOVED WITH YOUR CAR’S LUG WRENCH. If you have a flat, you’re screwed and will have to get a tow. Fortunately, eBay and other accessory firms sell new chrome-plated solid steel nuts that can’t deform and can always be removed with your in-car tools. I just replaced mine with a twenty-dollar set that look great, but it took me two hours (with my shop tools) fighting the old ones off, punching them one-by-one out of the high-quality 6-point socket necessary to get them off. If the stainless cap tears apart, then you need to hammer a smaller socket onto the damaged lug to get it off! You can’t do that on the side of a remote highway. Man up—get better nuts!