What Run-Flat Tires Can Clarify
A compatible run-flat tire can support limited travel after a pressure loss, helping the driver reach a safer location or service without an immediate roadside wheel change.
It is most useful when fitment, installation, safety, and maintenance all support supporting limited controlled mobility after a loss of inflation through reinforced sidewalls or another load-supporting construction, within the tire maker's distance and speed limits.
Where the Shortcut Breaks Down
It does not make a punctured tire normal or guarantee continued mobility, and it cannot compensate for wrong wheel or vehicle fitment, failed TPMS, sidewall or structural damage, excessive speed or distance after pressure loss, overloading, heat buildup, low tread, aging, mixed tire construction, or skipped professional inspection.
A better decision compares the system around the part, not only the headline feature or product photo.