Look for embedded objects like nails or visible cuts. Apply soapy water to the area; if it bubbles, there is an active air leak.
A nail typically requires about 16mm of length to puncture the thick tread, but only 6mm to pierce the thinner sidewall. 3. Repairability: Plug vs. Patch Tire Repair Basics | USTMA TIRE PUNCTURING
Look for "egg-sized" bulges or lumps. These indicate air has entered between rubber layers, making the tire unsafe to drive on. Look for embedded objects like nails or visible cuts
Identifying a puncture early can prevent a dangerous blowout. if it bubbles