ЕМТ
Goodyear/Dunlop RunFlat Technology - EMT
ЕМТ (Extended Mobility Tire) is an exclusive Goodyear technology applied in production run-flat (safe after puncture) tyres. ЕМТ is the name of the first generation of Goodyear's runflat tire technology, which is now available for all kinds of motorists. Goodyear pioneered the world's first runflat tire as far back as 1934, with the introduction of the LifeGuard Safety Tube, a tube within a tire which maintained steering stability until the driver could safely pull the car over to the side of the road. The first commercial breakthrough came in 1992 with its extended mobility technology (EMT), which no longer required special wheels. The company has focused its research and engineering know-how over recent years in refining the EMT technology and delivering a tire with improved performance, handling and comfort levels, suitable for broad roll out in the car market.
RunOnFlat Keeps rolling when flat
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The Goodyear RunOnFlat tyre is a tyre with a remarkable extra feature: if needed, it can operate for at least 50 miles at up to 50 mph at very low or zero inflation. So even with a total loss of air pressure, the RunOnFlat tyre lets the driver continue driving to a safe place where the tyre can be examined. |
In fact, the RunOnFlat system performs so well without air that a tyre PRESSURE MONITORING SYSTEM (TPMS) is a necessary part of the tyre package to alert the driver if a tyre has lost inflation. A "FLAT TYRE" warning will appear on the TPMS if the inflation pressure of any tyre drops below the flat tyre preset warning pressure. See the vehicle's manual for information on this system.
Tyre Fitment
Goodyear/Dunlop strongly recommend fitting RunOnFlat tyres only on vehicles for which the car manufacturer has given approval.
Maximum speed and distance at low air pressure
Although the RunOnFlat tyre has been designed to give at least 50 miles of service at sustained speeds of up to 50 mph at low or zero air pressure, after such extreme usage the tyre may have to be replaced. To help prolong tyre life we recommend keeping your speed as much below 50 mph as possible and to drive fewer than 50 miles. This will increase the probability of being able to repair the tyre.
Note: For some vehicles the tyre's RunOnFlat potential may extend beyond the 50 miles / 50 mph standard. This extended potential mileage only applies when used in combination with the vehicle indicated, and of course provided that a TPMS is operational. The vehicle's owner manual always prevails over this policy.
How it works
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Goodyear's new RunOnFlat technology is based on the concept of reinforced sidewalls inside the tyre. When a standard tyre deflates, it simply collapses under the weight of the car, allowing the beads to come off the rim and the sidewalls to be squashed onto the road. The pressure totally destroys the tyre within a few miles. The reinforced sidewalls in Goodyear's RunOnFlat tyres keep the tyre on the rim and succeed in carrying the weight of the car for up to 50 miles after a puncture with complete air pressure loss. |
Tyre Pressure Monitoring System
Since your tyres will simply keep going after they've suffered pressure loss, RunOnFlat technology requires the presence of an on-board TPMS (Tyre Pressure Monitoring System) that lets you know that your tyre requires servicing. Without such a system, you would have no way of knowing that your tyre had suffered a puncture or a blow-out.
Repairs
RunOnFlat tyres can be repaired after a puncture in the tread, but not in the sidewall. Because of the tyre's unique reinforcing layers, it is not possible to apply the fabric-lined repair patch to the damaged area or carcass layer.
Technology
As a cutting-edge technology, RunOnFlat is still undergoing heavy development. While the basic system, consisting of reinforced tyres together with a TPMS system, has been developed, tested and is now commercially available, there are more technical innovations and enhancements that are just around the corner. In the near future, as soon as your car's TPMS system tells you that your tyre needs servicing, the nearest licensed service station will be automatically alerted through your car's GPS system, giving you directions to a site where qualified personnel will be awaiting your arrival, ready and able to get you on your way again as soon as possible.