You can check your tire tread depth using a simple penny test or by looking for built-in wear bars on the tire itself.
The penny test involves inserting a penny into the tire's deepest groove with Lincoln's head facing inward. If you can see the top of Lincoln's head, your tread is likely below the recommended minimum depth of 2/32 of an inch. Alternatively, most tires have small raised bars in the grooves; if the tread is level with these wear bars, it's time for new tires.
Tire condition is just one factor in vehicle safety; regular professional inspections are recommended.
Can I legally drive with tires below 2/32 inch tread depth?
In many places, driving with tread below 2/32 of an inch is illegal and can result in fines. It's also unsafe and can affect your vehicle's handling and braking performance.