When the tyres on your car go flat, you shouldn't have to worry about it. Most cars already have a spare tyre, a jack, and other tools that can help you change your tyres quickly.
To change a tyre or a couple of tyres, you need to park your car on level ground first. Remember to put the parking brake on. If your car has a manual transmission, you'll need to put it in gear. Turn off your engine, because there's no reason for it to be running. But if you park on a hill, put a big rock or a wheel chock under the opposite wheel so your car doesn't roll down the hill.
Now is the time to get out your spare tyre, a tyre iron, and a jack. If you need to take off a wheel cover, do this. Then, loosen your wheel's lug nuts. Before you put the jack in your car, you need to do this. Make sure to loosen all of the lug nuts that hold the tyre to the wheel. But don't take them all the way off. As long as the lug nuts are only loosened and not completely taken off, that's fine.
Then start lifting your car up. To be safe, check the owner's manual for your car to find out exactly where to put the jack. And when you jack up your car, make sure you raise it a little higher so you can both take off the old flat tyre and put on the new one.
When the car is jacked up well, you can now take the lug nuts off all the way. Then you can take off the flat tyre. Get your new tyre and put it where the old one was. Then put the lug nuts back on and tighten them.
Then you can lower the jack and take it off. You can now put your hubcap back on if you have one.
