For the majority of cars there is a spare tyre in the boot meaning that you can change the tyre and get on with your journey. More and more cars now however, do not have a spare tyre, they have a temporary wheel which is narrower than a traditional tyre and has limited road use.
When you get a flat, you need to find somewhere safe to stop. Do not suddenly brake or pull over to the side of the road. Ensure you pull over somewhere where it is safe to actually change the tyre.
If you are on the side of the road, ensure you put the hazard lights on, and if you have a warning triangle, place that some distance from your car so it is seen by oncoming traffic.
There will be a tool kit with the spare tyre, which includes all you need to change the wheel. The first thing you need to do is remove the hubcap, if you have one.
Then loosen the nuts on the wheels. These will be stiff but a bit of elbow grease should do the trick. Once they have loosened place the jack under the vehicle and carefully raise it.
Once the vehicle is high enough that the tyre is clear of the ground you can unscrew the lug nuts until the tyre can be removed from the car.
Replace it with the spare tyre. Put the lug nuts back in place and screw them on by hand.
Once the tyre is secure, lower the jack until the vehicle is once more on the ground. Tighten the lug nuts with the wrench until they are fully tightened.
Replace your hubcap if you have one and pop all the toys away.
Now you are good to go.
If you are using a temporary tyre you need to go to a tyre specialist like Imperial Tyres to get a full replacement as they are not intended for extensive road use. We can also check your alignment and ensure the pressure in the spare tyre is as it should be before being replaced in your boot.