What are the torque specs on lug nuts a Buick Century?

There's no single torque spec for Buick Century lug nuts that applies to all years and models. The torque specification depends on the year of your Buick Century and the size of the wheels/tires. You must consult your owner's manual.

This manual will provide the correct torque specification for your specific vehicle. Using the wrong torque can lead to loose wheels (dangerous!) or damaged lug nuts and wheel studs. If you don't have the owner's manual, you can usually find a PDF version online by searching for "[Your Buick Century Year] Owner's Manual PDF". Alternatively, a Buick dealership or a reputable auto parts store might be able to look up the specification for you.