Low profile tires
and larger rim diameters may make tires more vulnerable to road hazards like potholes, railroad tracks and curbs.
When a bubble appears on the sidewall of your tire, you can be pretty sure that an impact occurred and the tire’s inner liner has been pinched. When the liner has been pinched, a pinhole appears that allows air to escape to the outside and for a bubble to form.
Once a bubble appears, tire safety has been compromised and it is only a matter of time before the tire fails. Another impact in the area of the bubble can cause the tire to have a catastrophic failure.
Inspecting your tires regularly for road hazard damage and for proper tire inflation pressure
will keep you safe and help your tires wear more effectively.
One final point, tires can bubble on the inside wall
as easily as on the outside wall, be sure to check both sides when you are doing your inspections.