How to Change a Flat Tire: Step-by-Step Guide

A flat tire is one of the most common roadside emergencies. Whether you hit a nail on the highway or noticed a slow leak in a parking lot, the ability to swap in a spare tire is a fundamental driving skill. It does not require mechanical experience -- just the right tools and the right steps.

What You Need

Most vehicles come with everything required stored under the cargo floor or behind the rear seat:

• Spare tire (full-size or compact "donut" spare)
• Jack (scissor jack or bottle jack)
• Lug wrench (L-shaped or cross-shaped)
• Wheel wedges or bricks (to block opposite tires)
• Flashlight (if changing at night)

Before you ever need them, locate these items in your vehicle and confirm the spare tire is properly inflated. A flat spare is useless when you need it most.

Step-by-Step Instructions

1. Get to a Safe Location

Pull completely off the road onto a flat, stable surface. Avoid soft ground, hills, or curves where other drivers cannot see you. Turn on your hazard lights immediately. If you have reflective triangles or road flares, place them behind your vehicle.

2. Secure the Vehicle

Engage the parking brake. Place wheel wedges or heavy objects behind the tires opposite the flat to prevent rolling. If you are changing a front tire, wedge the rear tires and vice versa.

3. Loosen the Lug Nuts

If your wheel has a hubcap or cover, pry it off first. Using the lug wrench, turn each lug nut counterclockwise about half a turn. Do not remove them yet -- you just want to break the initial resistance while the tire is still on the ground. If a nut is very tight, you can carefully stand on the wrench handle for extra leverage.

4. Position and Raise the Jack

Consult your owner's manual for the correct jack point near the flat tire. This is a reinforced area of the vehicle frame designed to support the jack. Placing the jack in the wrong spot can damage the vehicle body or cause the jack to slip. Raise the vehicle until the flat tire is roughly six inches off the ground.

5. Remove the Flat Tire

Fully unscrew the lug nuts and set them somewhere safe -- a pocket or a cup works well. Pull the flat tire straight toward you to remove it from the hub bolts. Set it flat on the ground under the vehicle as an extra safety measure in case the jack fails.

6. Mount the Spare

Lift the spare tire onto the hub bolts. Push it flush against the hub. Thread the lug nuts on by hand in a star (criss-cross) pattern to ensure the tire seats evenly.

7. Lower and Tighten

Lower the vehicle with the jack until the spare tire touches the ground but does not bear the full weight. Tighten the lug nuts firmly with the wrench in the same star pattern. Then lower the vehicle completely and remove the jack. Give each lug nut one final tighten.

8. Check Pressure and Drive Carefully

If you have a tire pressure gauge, check the spare. Compact spare tires typically require 60 PSI. Drive directly to a tire shop -- most compact spares are rated for 50 miles per hour maximum and are not designed for extended use.

When to Call for Help Instead

There are situations where changing the tire yourself is not safe:

• You are on a narrow highway shoulder with fast traffic
• The ground is too soft or uneven for the jack
• The lug nuts are seized and will not budge
• You do not have a spare or jack

In these cases, stay in your vehicle with your seatbelt on and call roadside assistance. Safety always comes first.