[Lessyie]

I was driving at around 80 km/h, and suddenly I heard a noise of some tiny rock hitting. And I realized that my tyre maybe blowed out. It was the passenger side rear tyre.
I tried to pump up the tyre with the pumping kit but it didn\'t work.
Now I am waiting for the tow truck of the BMW service. I searched for the michelin on web it cost around 3000 RMB( 500 usd). And I have to replace the tyre in the 4s store which must cost more.
Any suggestion of replace the tyre. As I have to buy a new tyre can I have a Pss instead of ps2? My 1m has just 1700 kms. Poor me.
Oh, Btw I\'m living in Shanghai China. And it\'s 4 am...sad