Hi there, I'm from Taipei too. I had my 135i imported from the US earlier this year. I'm also looking to buy a set of Advan RZ in gunmetal. May I ask you where did you order the wheels from? US or local vendors?
I have some mods in mind as well, maybe we can exchange modification plans.
Join the TW 1-series
facebook page if you haven't already. Hope to see you around soon.