To assess the paint condition, there are two tests that you can perform: Run your hand lightly over the exterior surface after washing and drying. The top surface should feel very soft and smooth. If you notice any rough spots or feel any drag, your vehicle needs to be waxed.  Spray water on the vehicle and run your hand over the top surface. If you see tight beads, that means the paint has the right level of protection. If you see loose beads, then it does not have enough protection. If you don’t see any beads, your vehicle doesn’t have enough protection. Apply a wax immediately.