Quote Originally Posted by trumpetr
Yeah,,,the 20 mm offset is critical,,,as for tires,,,it seems that 235/45/17 is right for your car,,,,,any wider,,,and the fronts can rub on the strut---- recently went thru a bad experience at a tire store,,where they wanted to mount a 'bmw' wheel that had 47mm offset, because they insisted it will fir a 5 series (47mm offset is for a 3 series),,,,well,,,it didnt fit, and in the process, it clipped my brake sensor wire (LF wheel),,,and i had a brake sensor alert come on. Make sure the offset is 20mm for all 4,,,and that your front tire width isnt over 235. You can go wider on the rears,,for a staggered fit, but you wont be able to rotate fronts for backs.
As for the price,,,what funds ($US, or?)
Look at what Bruno has to say about tire and wheels,,,,,
www.bmwe34.net

Art.
Most of the Style 5's (17") were made for the E39, and hence will have an Et20mm... 11 - 23 will fit just fine, and you could fit up to a 245 on the front, though there would be no reason to. I ran the Style 5's that are now on my 540/6 on Kris' car, and they worked with zero difficulty.

Kris, be sure to order up a set of hubcentric rings (from Discount Tire or Tire Rack) and have then ready when you are good to go. with the 3.91 LSD you have, you can run up to a 245 rear and still break them loose...

I ran the 235/45 , 245/40 staggered set-up....