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Extended Mobility Technology (EMT) vs. RunOnFlat (ROF) Tires

What's the difference between Goodyear Eagle F1 GS-D3 EMT (Extended Mobility Technology) tires and Eagle F1 GS-D3 RunOnFlat (ROF) tires? 

Only their name! 

Goodyear has begun the global process of changing the identity of their self-supporting run-flat tires from Extended Mobility Technology to RunOnFlat. The new RunOnFlat name was selected because it better describes a self-supporting run-flat tire's capabilities than the earlier Extended Mobility Technology name. 

While Goodyear already has other RunOnFlat tires in Europe, the first examples arriving in the United States are the Eagle F1 GS-D3 RunOnFlat tires in sizes for the Ferrari F430 Coupe and Spider, as well as the Maserati Quattroporte.

Maserati Quattroporte Front
245/40R19 94Y
285/35R19 99Y

Ferrari F430 Coupe & Spider Front
225/35R19 (84Y)
285/35R19 (99Y)

While Goodyear's name conversion from EMT to RunOnFlat will take some time, expect to see other RunOnFlat tires used as Original Equipment on other vehicles in the United States in the near future. 

Goodyear's RunOnFlat tires are only recommended for vehicles that were originally fitted with self-supporting run-flat tires and equipped with a tire pressure monitoring system.

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