Note: If your spare tire is on a steel wheel and your road wheels are aluminum you must also verify the application for your spare tire/wheel. This means the McGard set is not the proper one for your vehicle. Bottomed out refers to the closed end of the nut resting on the stud, while the bottom of the nut fails to fully contact the wheel, or the shank is too long and is resting on the hub assembly which will not allow the washer to tighten to the wheel. If there are gaps and the washer is loose the lug nut or lock nut may be bottomed on the stud, or the shank has bottomed on the hub assembly (see illustration #3). Check for space or gaps between wheel, washer and lock/lug nut. Verify the washer is tight on the wheel.Install one McGard lug nut or lock nut on each wheel from step one.In all lug nut applications, the McGard lug nut must not have a loose or sloppy fit to the wheel hole diameter. Verify the McGard lock nut or lug nut shank diameter matches your lug nut.Visually verify that the McGard lock nut or lug nut shank length matches your lug nut.Remove one lug nut from both a front wheel and a rear wheel.Verification for Mag or Shank Style Lock Nut or Lug Nut: Upon verification of proper application, complete installation per McGard’s installation instructions.Minimum thread engagement must be equal to the thread diameter of the wheel stud.If you do not wish to verify the application now, keep your original lug nuts in your vehicle for use with the spare tire/wheel. Note: If your spare tire is on a steel wheel and your road wheels are aluminum, you must also verify the application for your spare tire/wheel. Check for space or gaps between wheel and lock or lug nut. Bottomed out refers to the closed end of the nut resting on the stud, while the bottom of the nut fails to fully contact the wheel. If the seating surface is not marked by the wheel, the lug nut or lock nut may be bottomed on the stud (see illustration #2). Look at the seating surface of each McGard lug nut or lock nut (see illustration #1).Remove both McGard lug nuts or lock nuts.Install one McGard lug nut or lock nut on both wheels from step one. ![]() Visually verify that the seating surface of your lug nut matches the McGard lug nut/lock nut.Remove one lug nut from both a front wheel and rear wheel.Verification for Cone or Radius Seat Lock Nut or Lug Nut: Installation/Reinstallation of McGard Lug Bolts.Verification for Cone or Radius Seat Lock Bolt or Lug Bolt.Verification for Mag or Shank Style Lock Nut or Lug Nut.Verification for Cone or Radius Seat Lock Nut or Lug Nut.Example: M12 x 1.5 nut requires a minimum of 12mm (.472”) of thread engagement. Minimum thread engagement must be equal to the thread diameter of the wheel stud. Note: When installing wheel lock nuts and lug nuts, verify that it is the correct thread size, seating surface type (cone seat, radius seat, shank) and style as recommended by the wheel manufacturer.
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