If your 518 is an E34 (which I'm assuming it is - sorry, don't know much about the Euro versions), the only front end alignment adjustment is the toe. It is adjusted by adjusting the tie rods. However, it needs to be done on an alignment machine for accuracy and for it to track correctly.
Most problems are usually something simple !
Originally Posted by noego
It's Deja Poo - as in, I've heard this **** before.
Calypso Red 1992 525i with 225K miles
1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold