Haida HD921 was being operated from the beginning of the summer season, which is now about six months. I did on Haida HD921 about 4000 miles and I am pleasantly surprised I did not have the situation that the tires failed me. The real test was going on 100 miles distance in a massive rain. It was pouring hard at a speed of 80 mhps and the car was going smoothly, no strange and dangerous behaviors stick to the road like it was glued to it. As for durability and abrasion hard for me to say how far the tread was intacked. To sum up: my car is different sometimes calm, sometimes fast and dynamic and tires keep up in any case.
Tires purchased occasionally in January 2014. If the surface is dry, the car behaves very well, cornering tire hum quite significantly. As for the wet weather here, things are completely different ..... Vectra after chip tuning for 170hp / 370Nm. The wet tires break even on 3rd gear .... behave very badly and Improvidence also riding in the rain above 100km / h belongs to the brave. Generally recommended for people who do not travel in the rain.