Which types of tire injuries are serviceable? The answer to that question depends upon the injury itself. Every injury, including punctures, scrapes, bulges, separations, or cuts should be evaluated by your Nitto dealer.
Air loss due to punctures can ruin tires that might have been saved had they been removed in time for proper repair. Gradual air loss raises a tire's operating temperature. This can cause some of the components to separate, or damage the tire body in ways that create rapid or sudden air loss.
You can never play it too safe; if your tire shows visible damage or you suspect hidden damage due to small punctures or impact, consult your Nitto dealer.