How to Safely Change a Flat Car Tire in 20 Minutes

Published on June 2, 2026

Getting a flat tire on the side of the road is a stressful experience, but waiting hours for a tow truck is even worse. Knowing how to change a tire yourself is an essential survival skill for every driver. With a few basic tools located right in your trunk, you can swap your flat for a spare and get back on the road in about 20 minutes. Here is how to do it safely and efficiently.

Gather Your Tools

Before you begin, open your trunk, lift the floor panel, and retrieve your emergency tire-changing kit. You will need:

Spare tire: Ensure it is inflated properly.
Jack: To lift your vehicle off the ground.
Lug wrench: To loosen and tighten the wheel nuts.
Wheel chocks: (Or heavy stones/bricks) to prevent the car from rolling.
Your vehicle's owner manual: To locate the exact jack points.

Step 1: Secure Your Vehicle

Safety is the absolute priority when changing a tire. Never attempt to change a tire on a steep hill or soft dirt.

Find a safe spot: Pull over to a flat, level surface as far away from moving traffic as possible.
Engage safety measures: Turn on your hazard lights, put the car in Park (or Reverse for manual transmissions), and pull the parking brake up as tightly as possible.
Chock the wheels: Place wheel chocks (or heavy rocks) behind the tires on the opposite end of the car. If your flat is in the front, block the rear tires; if your flat is in the rear, block the front tires.

Step 2: Loosen the Lug Nuts (While on the Ground)

Do not raise the car yet. You need the resistance of the ground to break the resistance of the tight lug nuts.

If your car has a hubcap or wheel cover, use the flat end of your lug wrench to gently pry it off.
Fit the lug wrench onto a lug nut and turn it counterclockwise (lefty-loosey) to break the resistance.
Loosen each lug nut about one-half turn. Do not remove them completely yet; you just want to break their initial grip.

Step 3: Position the Jack and Lift

Placing the jack in the wrong spot can damage your car's body or cause the vehicle to slip off.

Consult your owner's manual to find the designated jack points. These are usually reinforced metal notches located on the vehicle's frame just behind the front wheels or ahead of the rear wheels.
Place the jack underneath the frame point and crank it slowly until the flat tire is roughly 6 inches off the ground.
Warning: Never place any part of your body under the vehicle while it is supported only by the jack.

Step 4: Remove the Flat Tire

With the car raised, you can now safely remove the wheel.

Unscrew the loosened lug nuts the rest of the way by hand and place them in a safe spot (like inside your pocket or your hubcap) so they don't roll away.
Grip the flat tire by the tread and pull it straight toward you. Set it flat on the ground next to you (do not let it roll away).

Step 5: Mount the Spare Tire

Now it is time to install your temporary replacement.

Lift the spare tire and align the rim holes with the wheel bolts. Push the tire onto the bolts until it sits flush against the hub.
Reinstall the lug nuts by hand, tightening them clockwise as far as you can.
Use your lug wrench to snug them up gently, but do not tighten them fully with the wrench while the car is still in the air, or you risk destabilizing the jack.

Step 6: Lower the Car and Do the Final Tighten

To ensure the wheel is mounted evenly, you must tighten the nuts in a specific sequence.

Slowly lower the jack until the spare tire touches the ground and bears some weight, but do not lower the car fully.
Using the lug wrench, tighten the lug nuts as tightly as possible using a star pattern (tighten one nut, skip one, tighten the next, and so on). This ensures the wheel seats evenly on the hub.
Lower the car completely to the ground, remove the jack, and give each lug nut one final, heavy pull with the wrench to ensure they are locked tight.

Step 7: Pack Up and Drive Safely

Put your flat tire, jack, and wrench back into the trunk. Remember that most spare tires (especially compact "donuts") are only temporary. Do not drive faster than 50 mph (80 km/h) or longer than 50 miles on a spare. Head straight to a tire shop to get your flat repaired or replaced.