
If a tire hits a pothole at high speed, it will bulge immediately; if the speed is slower or the impact is minor, the cord fabric may not break, and the tire won't bulge right away. Besides hitting potholes or impacts, the following situations can also cause tire bulging: 1. Driving with long-term underinflated tires: Underinflation squeezes the tire's cord fabric, making it prone to fatigue and cord breakage during driving. 2. Parking on uneven surfaces for extended periods: Parking with the tire on the curb can gradually damage the cord fabric, leading to bulging. 3. Wheel rim deformation: A deformed wheel rim can forcefully squeeze the tire, damaging the cord fabric and causing bulging after some time of driving.

The time it takes for a bulge to appear after a tire scrapes against the curb is actually uncertain—it depends on the severity of the scrape and the condition of the tire itself. I’ve personally experienced this situation: one day while driving, I accidentally scraped the curb. At first, it seemed fine, but after driving a few hundred kilometers, I noticed a small bulge on the sidewall. Tires are made of fabric plies and rubber. If the internal structure is damaged during the scrape, the plies can break, allowing air to seep in and form a bulge. A minor scrape might take days to show signs, while a severe one can cause noticeable abnormalities while driving. Such bulges are extremely dangerous—a blowout can easily lead to loss of control, especially at high speeds. That’s why after any curb scrape, I immediately stop to inspect the tire sidewalls, and even if there’s no bulge, I take it to a repair shop for a professional check. Regular maintenance is crucial—never overlook tire conditions to prevent minor issues from escalating. I recommend checking tire pressure and wear regularly and replacing aging tires promptly to significantly reduce the risk of accidents.

The time it takes for a tire to bulge after scraping against the road is usually related to the impact force. A minor scrape might not show immediately, but a bulge can slowly develop after driving for a while. In cases of severe scrapes, such as hitting a large pothole or curb, the tire's inner fabric can break instantly, allowing air to enter and significantly increasing the risk of a bulge, which may appear within minutes of driving. This type of damage occurs because the tire's sidewall is relatively weak, and its internal structure gets compromised when compressed. Whenever I scrape the road while driving, I always pull over immediately to feel the tire's surface for any bulges or cracks. Don't underestimate a bulge—it greatly reduces the tire's strength, raises the risk of a high-speed blowout, and compromises safety. Promptly visiting a professional shop for inspection and replacement can prevent greater losses. Developing good habits, such as monthly checks on tire pressure and appearance, and avoiding poor road conditions, are effective ways to protect your tires.

The time for a tire to bulge after scraping the curb is uncertain. If the scrape is deep and damages the cord fabric, air may quickly enter and cause a bulge; conversely, with minor damage, it may take a few days of driving for the bulge to appear. Once, I scraped the curb and didn't pay much attention at the time, but after driving a few dozen kilometers, I noticed a bulge. Upon checking, I learned that the tire sidewall is a weak point, and pressure damage from scraping the curb can cause this. The risk of bulging is high, so you should immediately stop to inspect the surface and repair any abnormalities. Avoid long-distance driving before replacing the tire—safety first.


