These tyres are exceptionally noisy on the motorway on a Lexus NX 450h+ Plug in hybrid F-Sport model. At 2.8 bar pressure you can't hold a conversation and at 2,3 bar it is bad, but manageable. They are runflat tyres and it is clear that the car is not engineered to deal with this kind vibration which would normally be absorbed by the tyres. The balancing is good, both wheels and tyres at higher speeds, it is just that the tyres themselves transmit all surface unevenness through the car's mechanics to the floor, seats and steering wheel, and the head up display vibrates as well, distorting the picture. On many motorways there are sections with quite rough surfaces to aid drainage and make them "non-slip". These tyres transmit all the surface structure up into the car.
I plan to change them at the earliest opportunity.