I'm not sure about rim width, I think its only something like 16x 6.5" because the widest tyre i can fit is a 205. Also not sure on the offset either, ive looked over the rims several times but theyre pretty old so if they had a sticker on them, they dont anymore. So my current tyre size is 205/50/r16. Mind you my car is a ST185 not a ST184 so offset could be slightly different. Maybe go king spring lows and they will probably be about a 2" drop, where as superlows are a 3" i'm fairly sure