) while driving a Ford AU wagon
(225/45 R17) on a combination of roads
for 30,000 average
The large (12 year old) station wagon I put these on changed the drive considerably. The car has done 310000 Km, so it has seen a number of different tyres. These Michelin's instantly made the road noise almost disappear, so much so, my wife (who has no interest in tires) commented 'the car is now as quiet as mine'. Believe me, that is a huge complement.
As for the ride, it makes the car feel much more expensive to drive. Meaning, it has a smoother ride. The car doesn't get driven hard, so I can't comment how the tires would preform on a performance car, but these tires are not designed for high performance. The grip in dry and wet has been excellent for normal driving. Again, if you are in the market for a high performance tire, buy a high performance tire. If your after a luxury touring tire (a tire for a family car) which is super quiet, very comfortable and a pleasure to drive on, this is worth every cent.
So far 50000 km and about 40% tread left (about 50% city, 50% highway driving), driving 'normally'.
I'm going to put these on my wife's car as soon as the Goodyear's need replacing.