If you haven't changed a tyre before, consider a training run. Choose a dry day, a flat surface and when you've got plenty of time.
Check out the gear in your car: make sure that your spare tyre and tools are in good condition. Do not attempt to change the tyre if they're not. Make sure that your personal safety will not be compromised. Be seen: safety clothing (if you have any) and turn on your hazard lights!
Right, here's how to change your car tyre:
When you've finished kneeling on your plastic sheet, use it to protect your boot from the dirty tyre. If you have a space saver, do not travel faster than 80 km/h and get the tyre fixed as soon as possible.
Some models, such as Alfa Romeo and Fiat, do not have studs extending from the hub to hang the wheel on. Instead their wheels have centring flanges with small pins. The tool kit includes a longer pin which screws into a bolt hole. Lifting the wheel onto this lines it up perfectly.
To prevent theft, alloy wheels have locking nuts, which won't fit a standard socket. When buying a car with alloys, check for a locking nut and the correct socket.
Every time we encounter questions on this subject it causes heated debates. Opinions differ for various reasons and most of these explanations, for or against, have some merit.
The tyre industry states when replacing two tyres on your vehicle to fit them on the rear axle. Their reasoning is fitting new tyres to the front can result in oversteer and loss of control especially when braking or swerving sharply.
In the past we mechanics used to believe fitting newer tyres to the driving wheels was the right thing to do. Front wheel drive cars had new tyres fitted to the front and rear wheel drive vehicles had them fitted to the rear. It sounds logical as most of the wear will occur on the drive axle. Most people also believed a front wheel driver had better handling with new tyres on the front.
If your tyres are in such poor condition that this is a big cause for concern, then you probably should be replacing all four tyres.