You should not necessarily replace the leaking tires because some damage can also be fixed at a low cost of about 20 dollars.
The very first step you must do is to find the exact point of the loss of pressure. The secret is quite simple. It is possible to fill out the pump bottle with sterile water and then spray it on the wheels thoroughly. Where bubbles appear, that’s where the tire leaks. Remember, you must first remove the rubber cap from the tire valve. You must clean the suspicious area. Nails and screws often stick here. Other causes might be damage to the rim valve or, for example, missing valve core. Immediately after you find the reason, you can repair it if necessary.
Can I Fix a Flat Tire?
A nail in the profile usually causes some holes in the tire tread, and the workshop can quickly solve this problem. If you are unlucky, maybe you will find more than one leakage holes. Still, you must take out the tire from the rim. The nail will be pulled through the hole and glued. Unfortunately, if the gap is more significant than 0.6 – 0.8 cm or the tire is severely damaged (broken full) then don’t repair it, you have to buy a new one.
Side of the tire
Drop a little amount of clean water on the tire valve and see if bubbles appear or the water is bubbling. Simple damage to this section can be repaired by yourself as a vehicle owner. If a hissing sound comes from the valve, the tire valve inlet may be dirty or damaged. Tire valve inlets can be easily changed and exchanged. The rubber feet of the tire valve might tear at the edges. Here, a pro mechanic must take the tire carefully from its rim and replace the valve.
Corroded rims can cause the distance on the tire rubber, and the air will come out. There is no other way because you have to replace the rim and tire that has been torn. Or maybe the rim is dented because it hit the sidewalk very hard. You can’t fix that, and you should purchase a new car wheel.