A flat tyre can be a real hassle at any time. Not only might you find yourself stuck at a certain location, but a tyre which suddenly blows out can be a real driving hazard. Changing a flat is therefore an important process to fully understand. How can this be accomplished and what safety concerns should you be aware of?
The Ground Underneath
Before you begin ANY work, you need to be certain that the vehicle is on a clean, flat and dry surface. You are otherwise taking your life into your own hands. Check to see if the soil is soft; the jack may otherwise sink into the ground. If you cannot find a flat surface, call a towing agency or a mechanic. Many step-by-step guides emphasise this point.
Working with the Jack
Once you have the jack underneath the vehicle, you need to be sure that the portion that will contact the vehicle is in the correct place. NEVER place the jack on rusty parts or directly beneath the floorboard. You risk puncturing the chassis and once again, the car can fall on top of you. It is best to have contact with a firm location such as an axle. Pump up the jack using the handle until you can see that the wheel is a few centimetres off of the ground. There is no reason to raise the car higher than it needs to be.
Repairing the Tyre
Check to see if you can tell where the leak is coming from. Remove any foreign objects such as a nail that may have become lodged in the wheel with a pair of pliers. If you cannot see any hole, pour water over the entire tyre. Then, listen carefully; a bubbling sound may hint at where the air is escaping from. If the hole is very large, you will need to replace the tyre. Otherwise, there is a foam spray that comes in handy.
Inserting the Spray
Once you have purchased the foam canister, place the end of the tube directly on top of the air nozzle on the wall of the tyre. Depress the button on the can and wait until the ENTIRE contents are sprayed out. Carefully lower the jack and check to make certain that the tyre is not deflating.
Most foam spray kits recommend that you drive your vehicle on a quiet road. The spinning action of the tyre will cause the substance to entirely coat the inside walls.