Will a tire with a nail puncture leak completely overnight?

[VonLillian]

If it's not a run-flat tire, the air will leak out completely. Here is some information about run-flat tires: Disadvantages: Run-flat tires are harder, so you will feel more vibration when driving on bumpy roads. Moreover, run-flat tires of the same grade are more expensive than regular tires. Performance: After a blowout, a run-flat tire allows the car to continue driving at up to 80 km/h for a maximum of about 80 kilometers, which is enough to reach the nearest repair shop for a tire replacement. Function: Run-flat tires not only allow continued driving after losing pressure but also ensure safety. After a blowout, a run-flat tire won't collapse immediately because its sidewalls are particularly thick, providing strong support to prevent the vehicle from rolling over. Additionally, cars equipped with run-flat tires do not have a spare tire. They can continue driving after a blowout without needing an immediate tire replacement, offering convenience and increasing trunk space.

[DelChristopher]

As a driver who frequently takes long-distance trips, I once discovered a nail in my tire during a late-night drive. By the next morning, the tire hadn’t completely deflated but was noticeably softer. In reality, the rate of air leakage varies depending on the size and location of the nail: a small nail in the center of the tread may cause slower leakage, possibly losing only 10-20 PSI overnight. However, a larger nail or one piercing the sidewall can lead to faster deflation, sometimes flattening within hours. Additionally, the age of the tire affects the leakage rate, with newer tires offering better sealing. Modern vehicles often come equipped with a Tire Pressure Monitoring System (TPMS); if the warning light comes on, immediate action is necessary. From my personal experience, if you spot a nail, don’t wait overnight—switch to the spare tire or get it repaired nearby. Otherwise, prolonged leakage can deform the tire, increasing the risk of a blowout, especially at high speeds. Regularly checking tire pressure with a gauge can prevent such hassles in advance.

[VonEverett]

I always make it a habit to walk around the car and check the tires after parking—safety comes first. If a tire gets punctured by a nail, the extent of air loss overnight depends on the tire's structure: for example, tires with a self-sealing layer may only lose a small amount of air, but most standard tires can deflate to dangerous levels. Leaving the nail in overnight can cause a sudden drop in tire pressure, damaging the sidewall and increasing the risk of losing control while driving. I also recommend carrying an emergency tire repair kit—if you get a puncture, it can temporarily seal the leak. Don’t forget to check the spare tire’s pressure to ensure it’s usable. If you spot an issue, don’t hesitate—drive straight to a professional shop or call for roadside assistance. Developing this habit can save you a lot of money on tire repairs.

[VanAlina]

My buddy once had a nail in his car tire. After a night, the tire wasn't completely flat and he could still drive a short distance to get it patched. Slow leaks depend on the size of the nail hole - small holes lose a bit of pressure per hour, dropping at most half a PSI overnight. But don't push your luck by driving on it - driving on a flat is extremely dangerous. It's best to keep a simple tire pressure monitor handy for real-time alerts.