While it could be the wheels, I'm willing to bet it is something else.
1. Are these E39 (74.1 mm CB) wheels? If so you need hubcentric rings to adapt your wheels to the E34's 72.56 mm hubs. eBay has them and a few online etailers. Note that all BMW rims are hubcentric and not lugcentric like your average chevy so the rim must match the hub exactly or it will be like your lug nuts are loose.
2. If you do have the right centrebore (or rings), putting 18" rims on an E34 which used to run stock rims, will bring out all the worn components in your suspension, particularly thrust arms and steering stuff.
3. Personally I would only use H&R spacers (and they must also be hubcentric). The rest are generally crap.
89 535iA ; 93 M5
Last edited by zubbie; 10-22-2008 at 08:09 PM.