Uneven Tire Pressure in My Toyota Corolla – What Could Be Wrong?

It sounds like you might be dealing with a slow leak, but there are a few other possible causes to check:

Slow Puncture: A common cause for tires losing pressure gradually is a small puncture, which might not be easily visible. To check for this, spray soapy water on the surface of each tire, including the sidewalls. If you see bubbles forming, it’s likely you have a slow puncture that needs to be repaired.

Valve Stem Issues: The valve stem, which is where you inflate the tire, can sometimes get damaged o r worn out, causing a slow leak. Make sure the valve stem is tightly sealed, and check for any signs of cracking o r deterioration. If damaged, it will need to be replaced.

Rim Damage o r Corrosion: If your wheel rims are bent, cracked, o r corroded, they might not form a proper seal with the tire, causing air to leak out. Inspect the rims for visible damage, especially around the edges where the tire meets the rim. If you notice any issues, you may need to replace the rim o r have it repaired.

Tire Bead Leak: Sometimes, the bead the part of the tire that sits against the rim can wear down o r become damaged, causing air to leak slowly. This is less common but can happen, especially if the tires have been improperly mounted.

Temperature Changes: Keep in mind that tire pressure can fluctuate with temperature. If you’re experiencing significant temperature changes, this might explain the pressure . However, if the tires are losing pressure consistently, it’s likely a mechanical issue rather than just temperature changes.

To fix the issue, I’d recommend taking your car to a mechanic o r tire shop to have the tires thoroughly inspected, especially if the cause isn’t obvious. They can perform a more detailed inspection, locate any leaks, and repair them. If a tire has significant damage, it might need to be replaced.