Rim Suggestions for 09 Gen4 2.5i

Hi Guys
Considering replacing rims when the tread runs out in about 10000k. The stock 17s seem to be sending road noise through the inside of the car although i have uped the profile of the tyres from the stock set. Whether or not thats just how it is I dont know but im a bit over it.
Considering buying these: http://www.ebay.com.au/itm/18x8-LENSO-PDX-suit-SUBARU-WRX-STI-LIBERTY-IMPREZA-5-100-38-/251133677484?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D14%26meid%3D5899453563280746669%26pid%3D100015%26prg%3D1006%26rk%3D1%26sd%3D251133677484%26
question is what do you guys think? wat are the max offsets I can have with 18's depending on width x 7.5 or 8 or 8.5? will lower about 2/2.5inch but not looking at rolling guards or anything like that.
was looking for a rim with 6 spoke in gun metal grey/bronze with a chrome lip/dish if anyone has suggestions also...
Considering replacing rims when the tread runs out in about 10000k. The stock 17s seem to be sending road noise through the inside of the car although i have uped the profile of the tyres from the stock set. Whether or not thats just how it is I dont know but im a bit over it.
Considering buying these: http://www.ebay.com.au/itm/18x8-LENSO-PDX-suit-SUBARU-WRX-STI-LIBERTY-IMPREZA-5-100-38-/251133677484?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D14%26meid%3D5899453563280746669%26pid%3D100015%26prg%3D1006%26rk%3D1%26sd%3D251133677484%26
question is what do you guys think? wat are the max offsets I can have with 18's depending on width x 7.5 or 8 or 8.5? will lower about 2/2.5inch but not looking at rolling guards or anything like that.
was looking for a rim with 6 spoke in gun metal grey/bronze with a chrome lip/dish if anyone has suggestions also...