The reason they have RFT's
The reason they have RFT's are that they hold up much better against tire explosions. All RFT cars are german and in Germany they are allowed to drive very fast. A tire explosion in 200km/h is not enjoyable. RFT tires hold up much better and the car is controllable. Altso - you don't want to stop on Autobahn to change a tire. On our normal highways in the rest of the world, where the speeds are around 110-120 km/h it's doable. Not safe but doable. On autobahn it's sucidal. So there it makes a lot of sense.
It should be an option for the rest of the world though.