thanks to all who hv contributed to this post. i end up getting 16 x 7 ET 38 with Falken ZE912 205/45R16. rim/tyre stay inside. tyre quiet. previously having toyo teo plus, was like driving Boeing 747.

And there are tyre shop would put tyre on their new rim and install on customer car for testing. So those who are still dunno, you can ask for this service.