Appointment
The car starts to twitch, loses control and reduces speed. The suspended stop and the alarm signal, which usually ends with the wheel's puncus. There are not many options for solving the problem: either replacing the wheels on the ground or moving to a car service that may be fraught with damage to the vehicle's running gear. How to avoid this trouble?
The driver constantly has to pay attention to the state of the pavement, but even the most experienced are not insured from the puncture. Of course, engineers long ago thought about how to deal with the problem and the solution was found. In the name of the innovation of Runflag, what translates from English means running on a straight line. Run-Run; flat-direct, coating;).
Simply put, Runflag technology allows the movement to continue if the bus is damaged. The car, which is equipped with such tyres, is capable of driving up to 150 km at the puncmat.
Background
The first steps towards the development of Runflat were made in 1980, and the developers of the invention were driven by the disabled. This is the audience that most needed to get to the car service in the event of a bus punctation. However, not only physically incomplete drivers were granted the privilege. In 1987, Runflat entered the basic configuration of Porshe 959. Successful sales showed engineers that the case was not only good, but also profitable.
At the moment there are 4 manufacturers who use Runflag technology for their tyres: Dunlop, Bridgestone, Goodyear and Pirelli.
Device and operating principle
The tyres marked "RunFlat" differ from the standard reinforced sidewalls. When a normal bus comes down, it settles under the weight of the car, while Runflag successfully copes with its weight and allows the movement to continue. The main differences are:
-reinforced wall of the sidewall;
presence of tyre amplifiers;
Reinforced side ring;
Runflat technology allows a car with puncture tyres to pass up to 150 km, depending on the manufacturer of rubber and the conditions of its operation. The tyres of different manufacturers are distinguished by the composition of the material, the maximum mileage on the run-flat wheel and the repairability (ability to repair the tyre after punctation).
There is one required condition for Runflag to run. The vehicle shall be equipped with a tyre pressure measurement sensor. If there is no such device, the driver may simply not notice the damage and continue the movement, which may cause unpleasant consequences.
You can install the buses on your regular drives, and you can install the tires in a standard way.
Advantage and disadvantages
Add:
First, safety in motion. Second, there is no need to drive a spare wheel in the boot. The big advantage is that you can get to the place where the bus can be repaired without any problems.
Less:
Some manufacturers only issue non-refillable tires. Another shortcoming is the reduction in comfort level of management (but in the circumstances, comfort does not have to be said). However, the most significant "anti-" is associated with the high cost of such tyres.
