Runflat technology used in the manufacture of expensive tires. Such cylinders have reinforced sidewalls. Availability of special support component allows the bus to withstand the weight of the car without collapsing, even when deflated.
The run-flat wheel technology Rinflat can drive about 50 miles if the car is fully loaded. If the car is only the driver, the traffic on the flat tire can last up to 150 kilometers.
The ability to "extended path" on the run-flat tires allow drivers to avoid the complicated and changing unsafe wheels among the traffic.
For security reasons, tires Run Flatmogut only be installed on vehicles with a driving stability control system (ESP) and air pressure sensor built into the IT system or other system that warns of changes in air pressure in tires.
From Wikipedia