I'm thinking about getting some rims for my car, what size do you recommend? 20 or 18 inches? What are the advantages/disadvantages of each wheel size.

Here's a link to the rims i want to get they're called black ice

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItemitem=170018652096ssPageName= MERC_VIC_ReBay_Pr4_PcY_BIN_ITrefitem=170016196051i temcount=4refwidgetloc=closed_view_itemusedrule1=C ategoryProximityrefwidgettype=cross_promot_widget
The car is aspen green