215/55R17 tyre problem

Buying experience is good. Riding experience is awesome. Looks performance reliability has no match. Servicing and maintenance is very expensive specially for zx7str and 215/55r17 tyre is of very poor quality. I have changed all my four tyre at only 21000 km. Poor suspension for that tyre arrangement all you need to do is take tension of alingment. Disappointment continue after 25000 km.