How to Use Wheel Chocks Safely

When the parking brake isn't enough to keep your vehicle from rolling.

Chris Teague | 

Jul 1, 2024 | 2 min read

Getty Images

Most of us don't think twice about putting our cars in park and walking away, but some vehicles and trailers need a little extra help staying put. Wheel chocks provide additional security by preventing the wheels from moving. They are commonly used when a parking brake isn't available or the vehicle is heavy enough to require additional support.

Here's a primer on wheel chocks, the types available, and how to secure a parked vehicle or trailer properly.

What Is a Wheel Chock?

Wheel chocks are wedges placed against a vehicle's tire wheel to prevent unintended rolling. Many people use them when leaving a vehicle or trailer parked on an incline, as the additional resistance from the wedge prevents movement. They're also used to keep a vehicle stationary while repairs or maintenance are being performed.

Wheel chocks can be made of wood, metal, or plastic and usually have a handle or rope attached for easier placement.

Chocking, as it's called, is especially important for trailers, which don't typically have brake systems when disconnected from a tow vehicle.

Different Types of Wheel Chocks

Metal is the most durable material for wheel chocks, as it is best at withstanding outdoor elements. Wood, plastic, and rubber chocks can decay over time, and crack after extensive use. Manufacturers make chocks in a range of widths, and buyers should choose ones that are recommended for the size and weight of the vehicle.

Some vehicles and heavier trailers require heavy-duty chocks, mainly required with dual-rear-wheel vehicles and laden trailers with heavy loads.

How to Properly Use Wheel Chocks

The first thing to remember about wheel chocks is that you should always use them in pairs. Securing only one tire won't do much to prevent a rollaway and could make any potential accident more dangerous and unpredictable. Base your purchasing decision on the vehicle you need to support and make sure to choose a chock material that can withstand the conditions your vehicle or trailer will most frequently experience.

When placing wheel chocks, be sure to wedge them tight against the tire. Placing chocks behind the tires is best if you're securing wheels on a flat surface. Position the chock as snugly as possible, which may require a light foot tap or a push, and make sure the chock is centered on the tire. If you're chocking a tire in the winter, clear as much of the ice or snow out of the way as possible to ensure a secure fit.

If you're unsure of the type or size of wheel chock you need to secure your vehicle properly, it's best to check the manufacturer's documentation. Getting the right weight rating, fit, and material is important to ensure safe parking conditions.

Chris Teague

After working in the technology and software industry for several years, Chris Teague began writing as a way to help people outside of that world understand the sometimes very technical work that goes on behind the scenes. With a lifelong love of all things automotive, he turned his attention to breaking news, writing new vehicle reviews, and detailing industry trends.