good tires only on dry surfaces. tread very quickly wear off especially the sides, the drama begins when it starts raining, it's hard to move without breaking the grip, for a few minutes before rain washed mud from the road, the grip and tractione drops dramatically on wet! but they are relatively predictable. Snow - the complete mistake on the snow! ABS pumps and the car goes where he wants, but it is a very good tire compared to the worst budget tire I've ever had - MOHAWK !!!
"MOHAWK- if you hate your mother in law, or wish someone's death only mohawk !!"

Replaced the standard BMW run flats for these tires on my 2005 525d.
They give excellent grip and always feel planted on the limit in both the wet and dry and I would say are close in terms of performance to the equivalent high spec Pirellis on a friends BMW.
The rears lasted 20,000 miles and the fronts lasted 33,000 which is almost unbelievable considering the way I drive. The fronts may have reached the 40,000 mark had the tracking not gone out and the outside shoulder worn away early.
The only downside is the noise on motorways which is a lot higher than those rock hard run flats, however the performance gain far out-weighs the noise.
Excellent tire and in my eyes undoubtedly the best value for money tire on the market, hence why I have had the same fitted.