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Installation/Removal

Note: When installing wheel lock nuts/lug nuts, verify that it is the correct style as recommended by the wheel manufacturer (flat seat, cone seat, radius seat, shank style, cone-shank style, etc.). Minimum thread engagement must be equal to the thread diameter of the wheel stud.

Verification for Cone or Radius Seat Lock Nut or Lug Nut:

Seating Surface Descriptions

  1. Remove one lug nut from both a front wheel and rear wheel.
  2. Visually verify that the seating surface of your lug nut matches the McGard lug nut/lock nut.
  3. Install one McGard lug nut or lock nut on both wheels from step one. Tighten to normal installation torque.
  4. Remove both McGard lug nuts or lock nuts.
  5. Look at the seating surface of each McGard lug nut or lock nut (see sketch #1). If the seating surface is not marked by the wheel, the lug nut or lock nut may be bottomed on the stud (see sketch #2). This means the McGard set is not the proper one for your vehicle.
    Note: If your spare tire is a steel wheel and your road wheels are alloy, you must also verify application for your spare tire. If you do not wish to verify application now, you should keep your original lug nuts in your trunk for use with the spare tire.
  6. Upon verification of proper application, complete installation per McGard's installation instructions.

 

Sketch 1:

Lug nut or lock nut seating surface should be marked by the wheel.
Sketch 2:

Mis-application: stud has bottomed on lug nut or lock nut.


Verification for Mag or Shank Style Lock Nut or Lug Nut:

  1. Remove one lug nut from both a front wheel and a rear wheel.
  2. Visually verify that the McGard lock nut or lug nut shank length matches your lug nut.
  3. Verify the McGard lock nut or lug nut shank diameter matches your lug nut. In all lug nut applications, the McGard lug nut must not have a loose or sloppy fit to the wheel hole diameter.
  4. Install one McGard lug nut or lock nut on each wheel. Tighten to normal installation torque.
  5. Verify the washer is tight on the wheel. If the washer moves, that may mean this is not a proper application, or the shank is too long See sketch #3).
    Note: If spare tire is a different style wheel or seating surface, keep your original lug nuts for the spare tire in the trunk for use with the spare tire.
  6. Upon verification of proper application, complete installation per McGard's installation instructions.

 

Sketch 3:

Mis-application: shank has bottomed on brake drum or rotor.


Mis-application: stud has bottomed on lug nut or lock nut.


Wheel Lock Installation & Removal Instructions:

Installation of McGard Lock Nuts/Lock Bolts:

Note: When servicing your vehicle, the lock should always be the first fastener removed from the wheel and the last fastener installed onto the wheel.

  1. Remove wheel covers (if equipped) and one lug nut/bolt from each wheel. Verify that lock style, seating surface style (cone, radius, flat, shank, etc.) and thread size match the lug nut/bolt removed. If studs are rusty, clean with a wire brush prior to installing wheel locks. Be sure to save enough Original Equipment Manufacturer lug nuts for use with the O.E.M. spare tire/wheel.
  2. By hand, install a McGard Wheel Lock onto each wheel. Use one lock per wheel.
    Notice: Impact guns usually cannot be set and/or maintain proper pressure to obtain proper installation torque and should not be used for lock installation. Use of impact guns (pneumatic, electric, etc.) for installation may cause over tightening and permanent damage to lock and key. Never use an impact gun with a key that has a cable or that is attached to another object via a cable or other means.
  3. Using the McGard key and a wrench, tighten each lock to the torque specified in your vehicle owner's manual. For best results, use a torque wrench and socket. Keep the key pattern firmly and squarely engaged into the lock pattern. They can be kept square to each other via direct inward pressure. This will prevent uneven pressure on the key which could result in damage to the lock and/or key.
    Notes:
    1. Over tightening the lock could result in difficulty of removal.
    2. McGard does not recommend the use of oil, grease or anti-seize lubricants on threads. Spraying the threads with a greaseless lubricant (such as LPS-1) once a year is recommended.
    3. If installing closed-end lug nuts or lock nuts, make sure that they have not bottomed out on the stud (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). Check for space or gaps between wheel and lock nut. See Application Verification information above.
    4. If installing lock bolts, make sure the shank length matches your lug bolt. Too short a length could cause thread damage. Too long a length can extend beyond the rotor and cause damage to other vehicle parts.
  4. Re-torque the locks after 25 miles of driving.

Installation of McGard Lug Nuts

Verification:

  1. Verify that lug nuts are the correct style as recommended by the wheel manufacturer, including the spare tire (i.e. flat seat, cone seat, radius seat, shank, cone-shank).
  2. Install one lug nut onto the front and rear wheel by hand.
  3. Tighten lug nuts to the recommended torque specification.
  4. Remove both lug nuts.
  5. Look at the seating surface of the lug nuts. If the seating surface is not marked by the wheel, the lug nut may have bottomed out on the wheel stud. This means the lug nut is not the proper one for your vehicle.

Installation:

  1. If studs are rusty, clean with a wire brush prior to installing lug nuts.
  2. Do not lubricate threads.
  3. Start lug nuts by hand.
  4. Minimum thread engagement must be equal to the thread diameter of the wheel stud, if there are any questions regarding this call Technical Support at 1-800-444-5847.
  5. Tighten lug nuts in a progressive crisscross pattern to the recommended installation torque found in your vehicle owner's manual. For best results, use a torque wrench and socket for final tightening. Lug nuts should be retorqued after the first 25 miles of driving.
  6. It is not recommended to use an impact wrench. Use of an impact wrench can result in uneven or over tightening of lug nuts, which could damage wheels or distort brake rotors.

SplineDrive Tips:

  1. Care must be taken not to dent or scratch SplineDrive lugs with colored caps or rings.
  2. When removing lug nut, do not drop. Carefully place down with aluminum cap up.
  3. To install SplineDrive Lug Nuts you will need to use the installation tool that came with the Lug nuts. Insert tool carefully and apply inward pressure when tightening and loosening to keep the tool in place.

Helpful Hint:

Be sure to save enough Original Equipment Manufacturer lug nuts for use with the O.E.M. spare tire/wheel.

Note: For SplineDrive Style Lug Nuts
When cleaning wheels with lug nuts that have colored aluminum rings or caps, only use wheel cleaners marked "Safe for All Wheels."

Removal of over tightened lock nuts/lock bolts:

WARNING: Eye protection must be used when removing over tightened locks.
WARNING: Use of an impact gun on a key with a cable or key cabled to a lug wrench can cause serious injury.

  1. Over tighten all lug nuts/bolts on the problem wheel to remove pressure from the lock nut/bolt. Do not tighten to the point of stud or lug nut/bolt thread damage.
  2. Remove the lock with your key. When using hand tools such as a lug wrench, ratchet, etc. direct inward pressure on the key must be used. This will keep the key pattern firmly and squarely engaged into the lock pattern. Normally McGard does not recommend the use of an impact gun, but if the key is not attached to another object (some McGard keys are equipped with a plastic or steel cable) an impact gun does work best for removing over-tightened locks. If using an impact gun, the lock may not come free immediately. Continue using the impact gun as the repeated ratchet motion will slowly loosen the lock. If the lock is not free after a few minutes, try to remove the lock using a ratchet or breaker bar (making sure to keep direct inward pressure).
  3. If the lock does not free itself, loosen one lug nut/bolt (4 hole wheels) or two lug nuts/bolts (5 hole wheels) opposite the lock and repeat step 2.
    Note: If the lock still will not come off, call McGard Customer Service Department at the number below for further instructions.
  4. Upon removal of the lock, remove all lug nuts/bolts and remount the wheel. Install the lock per the installation instructions found above.

If you have questions, call McGard Customer Service Monday-Friday, 8am-5pm Eastern time, 800-444-5847.