Beginner20 min4 tools

Change a Flat Tire

A flat tire at the side of the road is stressful — but it doesn't have to be. If you've practiced this once in your driveway, you'll handle it calmly when it counts. This guide walks you through every step.

Step-by-step instructions

  1. 1

    Get safe first

    Pull completely off the road onto a flat, stable surface. Turn on your hazard lights. If you have them, set out road flares or reflective triangles behind your car. Put your car in Park and apply the parking brake.

    Your safety is more important than your car. A flat tire on a busy highway is worth waiting for roadside assistance.

  2. 2

    Get your equipment out

    Your spare tire, jack, and lug wrench are usually in the trunk — often under the trunk floor. Some SUVs and trucks have the spare mounted underneath the vehicle.

    Check right now that your spare is inflated. Don't wait until you're stranded to find out it's flat too.

  3. 3

    Loosen the lug nuts (before jacking)

    Use the lug wrench to loosen each lug nut about half a turn counter-clockwise while the tire is still on the ground. This is important — if you try to loosen them after the car is jacked up, the tire will just spin.

    Lug nuts can be very tight. Use your body weight — stand on the wrench if you need to.

  4. 4

    Position the jack

    Find the jack points on your car — these are reinforced spots along the frame, usually marked with a notch or indicated in your owner's manual. Placing the jack in the wrong spot can damage your car.

    Your owner's manual has a diagram showing exactly where to place the jack for each tire.

  5. 5

    Raise the car

    Crank the jack until the flat tire is about 6 inches off the ground. Never put any part of your body under a jacked-up car.

    The car should feel stable as you raise it. If it wobbles, lower it and reposition the jack.

  6. 6

    Remove the flat tire

    Finish removing the lug nuts by hand and set them somewhere safe (a pocket, or the hubcap turned upside down). Pull the flat tire straight toward you and set it aside.

    Lug nuts are small and easy to lose in grass or gravel. Keep them together.

  7. 7

    Mount the spare

    Lift the spare tire onto the bolts. Line up the holes and push it flush against the hub. Hand-tighten the lug nuts in a star pattern (not a circle) to seat the tire evenly.

    The star pattern matters — it prevents the tire from sitting crooked.

  8. 8

    Lower the car and tighten the lug nuts

    Lower the jack until the tire touches the ground but the car's full weight isn't on it yet. Tighten the lug nuts firmly in a star pattern. Then lower the car completely and give each nut one final tighten.

    Get the lug nuts properly torqued at a shop as soon as possible — hand-tight is not enough for highway driving.

  9. 9

    Stow your gear and check the pressure

    Put the flat tire, jack, and lug wrench back in your trunk. Check the spare's pressure if you have a gauge. Drive to a tire shop as soon as possible.

    Most tire shops will patch or replace a flat for $20–$30. It's worth it to get back on a full-size tire.

You did it.

Changing a tire is one of those skills that feels impossible until you do it once. After that, it's just a task.