For some, using a torque wrench to properly tighten nuts and bolts is an automotive thing you have to learn the hard way. While it is unwise to over-tighten any car part, loose lug nuts or lug bolts are extremely dangerous and can lead to the loss of a wheel and tire, leaving you stranded on the side of the road, or worse.
If you took your car to a service center to have the tires rotated, hopefully they tightened the lug nuts to the correct torque when they reinstalled the tires and didn’t try something stupid. Although there are many tire rotations every day, most of which end with properly torqued lug nuts, professionals recommend retorquing those lug nuts within the first 100 miles of service to ensure the wheels are truly secure and to account for any lug movement or settlement.
In addition, the lug nuts/bolts that secure your vehicle’s wheels should be retorqued approximately every 5,000 miles and whenever a wheel is removed and reinstalled for any other maintenance. If the wheel has been removed, it is critical to properly torque it when reinstalling it, and you should retorque it after 100 miles or less, just as you would after changing the tire.
What you need to know about re-tightening your lug nuts
If you’re tightening your lug nuts at home do-it-yourself style, you’ll need to find the torque specs for your wheels. Usually the owner’s manual or the car’s official online specifications are your best bet. If your car has custom wheels and wheel nuts, they may have a different torque, which can be found in a separate manual.
The only tools you need to tighten your car’s lug nuts are an appropriate torque wrench, a socket wrench that fits your lug nuts, the special socket wrench that fits all lock nuts, and perhaps a pry tool to remove the hubcaps if your vehicle has them. It is worth noting that torque wrenches come in different sizes and values. Some read pounds-inches, while others read in pounds-feet, and you will need a torque wrench that exceeds your wheel’s torque spec by at least 20%. For example, you want a torque wrench with a maximum torque of 120 pound-feet to tighten your lug nuts to a torque of 100 pound-feet.
To retorque your wheels, first place your car on a level surface, set the parking brake, and block at least one tire in each direction. Set your wheel wrench, or mark the indicator scale, to the correct value, starting at the top. From there, work around all the lug nuts in a star, diagonal or cross pattern.
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