Most lug nuts are one piece of hardened steel, but Ford chose a design that puts an aluminum cap over a steel core.
The cap is notorious for swelling and delaminating when it gets hot. It’s also a great place to trap moisture and encourage corrosion. The end result? A lug nut that’s either too big for a standard wrench or fused so tight you need a drill, welding torch, and 7 Hail Marys to remove it.
A 2017 class-action lawsuit accused Ford of cost-cutting when switching to the two-piece design. It also said the automaker is aware of the problems, but won’t honor its warranty by denying any lug nut related claims.…keep reading