Tread Wear Patterns
The way the treads look on the tires can point to several problems, including underinflation, over-inflation or poor alignment. A tire that has both edges worn is underinflated and needs more air. If the driver believes that the tire is leaking, they should take the car to the shop, or get a new tire. However, sometimes the leak isn’t the fault of the tire but of a rim that doesn’t fit properly.
Sometimes the tire is fine and the rim fits but the problem is with a tire valve that’s letting air escape. Both a badly fitting rim and a poor tire valve are easy fixes.
If only the treads in the center of the tire are worn, this is a sign of over-inflation. The driver should let some air escape according to the manufacturer’s instructions. Squealing on curves is another sign of under-inflation and means that the wear on the treads need to be checked.