of what vehicle you have with a flat. For example a Rolls Royce has reverse threads on one side of the car. Loosening that normally would tighten the lug nut. I had an MG with one knock off or spinner to remove the wire wheel. I had to use a brass hammer to remove the spinner, getting the tire off the splines was another matter. Then again it could be a Chevrolet that has been rusted on due to salt water.