Proper wheel removal and installation depend critically on applying the correct rotational force. This force, measured in pound-feet (lb-ft) or Newton-meters (Nm), ensures the wheel is securely attached to the vehicle without overtightening, which can damage wheel studs, lug nuts, or even the brake rotor. For example, a common passenger car might require 80-100 lb-ft, while a larger truck could need significantly more.
Using the specified rotational force prevents wheels from loosening during operation, ensuring safety and preventing accidents. Historically, wheels were tightened manually with less precision, leading to potential under- or over-tightening issues. The development of torque wrenches has dramatically improved the safety and reliability of wheel installations. Correct application safeguards against costly repairs and extends the life of wheel components.