The basic process: locate, loosen, lift, remove, install, tighten
Changing a tire takes about 15 to 30 minutes once you know the steps. You will need your spare tire, a jack, a lug wrench, and wheel wedges or heavy rocks to block the wheels. The sequence is always the same: find a safe spot, loosen the lug nuts while the tire is still on the ground, use the jack to lift the vehicle, remove the old tire, mount the new one, hand-tighten the lug nuts, lower the vehicle, and then tighten the lug nuts fully with the wrench.
The reason you loosen the nuts before lifting is that the weight of the vehicle holds the tire steady while you break the nuts free. If you lift first, the tire will spin when you try to turn the wrench, and you will waste time and energy. This single step — loosening before lifting — is what separates a smooth change from a frustrating one.
Key Takeaways
- Always loosen the lug nuts while the tire is still on the ground, because the vehicle's weight keeps the tire from spinning.
- Block the wheels opposite the flat tire with wedges, bricks, or rocks so the vehicle cannot roll while you work.
- After you mount the spare, lower the vehicle completely before you tighten the lug nuts all the way — this ensures even pressure.
- Most spares are temporary and designed for short distances at moderate speed; have the flat tire repaired or replaced as soon as you can.
Finding a safe location and preparing the vehicle
Pull off the road as far as possible, ideally onto a flat, stable surface like a parking lot or wide shoulder. Avoid soft ground, gravel, or a slope, because the jack can sink or slip. Turn on your hazard lights and engage the parking brake firmly.
Before you touch the tire, block the wheels that are still on the ground. Place wheel wedges, cinder blocks, bricks, or heavy rocks in front of and behind the tire diagonally opposite the flat. If you are changing the front right tire, block the rear left tire. This prevents the vehicle from rolling forward or backward while you work. If you have no wedges, use whatever is heavy and stable — a log, a large rock, even a car jack itself placed horizontally.
Loosening the lug nuts and using the jack
Locate the lug nuts on the flat tire. They are the bolts that hold the wheel to the hub. Using the lug wrench, turn each nut counterclockwise about a quarter turn — just enough to break them free. You do not need to remove them yet; you are only loosening them so they will turn easily once the tire is in the air. If a nut is very tight, place the wrench on it and step on the wrench handle to use your body weight rather than just your hands.
Once all the lug nuts are loose, position the jack under the vehicle's frame near the flat tire. Most vehicles have a reinforced jacking point — a notch or raised section in the frame — and your owner's manual will show you where it is. Raise the vehicle until the flat tire is about six inches off the ground. Do not go higher; you only need enough clearance to remove the tire and mount the spare.
Removing the old tire and mounting the spare
Now that the tire is in the air, finish unscrewing the lug nuts by hand and set them in a safe place where they will not roll away — a cup, a small container, or even a clean spot on the ground. Remove the tire by pulling it straight toward you. It may be heavier than you expect, so brace yourself or ask for help.
Align the spare tire with the wheel hub. The holes in the tire must line up with the bolts on the hub. Push the tire straight onto the hub until it sits flush against the wheel. Hand-tighten the lug nuts in a star or cross pattern — if there are five lugs, tighten the top one, then the bottom left, then the top right, then the bottom right, then the remaining one. This pattern ensures even pressure. Do not use the wrench yet; hand-tightening is enough at this stage.
Lowering the vehicle and final tightening
Lower the vehicle slowly by turning the jack handle counterclockwise or using the release valve, depending on your jack type. Lower it until the spare tire is fully supporting the vehicle's weight and the jack is no longer bearing any load. Once the vehicle is on the ground, use the lug wrench to tighten the lug nuts fully in the same star pattern. Tighten each nut firmly but do not over-tighten; you are aiming for snug, not maximum force.
After tightening, remove the jack and the wheel wedges. Stow the flat tire, the jack, and the lug wrench back in your vehicle. Check the spare tire's pressure as soon as you can — most spares are temporary and run at a higher pressure than regular tires, and they wear out quickly. Have the flat tire repaired or replaced within a few days, because a temporary spare is not meant for long-term use.
What to do if the lug nuts are stuck or the tire will not come off
If a lug nut will not loosen, do not force it and risk stripping it. Try spraying it with penetrating oil like WD-40 and waiting a few minutes for the oil to soak in. Place the wrench back on the nut and tap the wrench handle gently with a hammer or rock to help break the corrosion. If that does not work, try rocking the vehicle slightly by shifting into Drive and Reverse a few times — this can help loosen stuck components.
If the tire itself will not come off the hub after you have removed all the lug nuts, the wheel may be stuck due to rust or corrosion. Try striking the tire gently with a hammer or rubber mallet near the edge to break the seal. Do not hit it hard enough to damage the rim. If the tire still will not budge, you may need roadside information or a tow truck.
Temporary spares versus full-size spares
Most vehicles come with a temporary spare — a smaller, thinner tire that looks different from your regular tires. Temporary spares are designed for short trips at moderate speed, usually up to 50 miles per hour and no more than 70 miles total. They are not meant to be driven on for weeks or months. Check your owner's manual for the specific limits for your vehicle's spare.
Some vehicles, especially trucks and older cars, come with a full-size spare that matches your regular tires. If you have a full-size spare, you can drive normally, but you should still have the flat tire repaired or replaced as soon as possible. Once you have a new tire on the vehicle, move the spare back to its storage location so it is ready if you need it again.
Frequently Asked Questions
What if I do not have a lug wrench?
Most vehicles come with a lug wrench in the trunk or under the rear seat. Check your owner's manual or the storage compartments in your vehicle. If you have lost it, you can purchase a lug wrench at any auto parts store for under $20. In an emergency, you can call roadside information or a tow truck to change the tire for you.
Can I change a tire in the rain or at night?
Yes, but take extra precautions. In rain, the ground is slippery and the jack may sink or slide; work slowly and double-check that the vehicle is stable before you get under it. At night, use your vehicle's headlights, a flashlight, or your phone's light to see what you are doing. Wear a reflective vest or jacket so passing traffic can see you.
How tight should the lug nuts be?
Tight enough that they do not come loose, but not so tight that you strip the threads or damage the rim. A good rule is to tighten until you feel firm resistance, then stop. If you have a torque wrench, your owner's manual will list the correct torque specification — usually between 80 and 120 foot-pounds depending on your vehicle. Most people do not have a torque wrench, so hand-tightening with the lug wrench until snug is acceptable for temporary use.
What if my vehicle has locking lug nuts?
Some vehicles use locking lug nuts to prevent theft. One of the four or five nuts on each wheel has a special shape, and you will need a small key or adapter that came with your vehicle to remove it. The key is usually stored in the glove box or with the lug wrench. If you have lost the key, you will need to contact the vehicle manufacturer or a dealership to obtain a replacement.
Should I drive to a tire shop or call for roadside information?
If you have a full-size spare or a temporary spare in good condition, you can drive to a nearby tire shop on your own. If your spare is flat, damaged, or you are uncomfortable changing the tire, call roadside information. Most auto insurance policies and roadside information memberships cover tire changes at no cost. If you do not have coverage, a tow truck will cost $75 to $150 depending on your location.