28th November 2009, 09:10
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#2
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Member, P500 Sport, DSC off (>900)
Join Date: Jan 2007
Location: Gwynedd, PA
Garage:
E60 M5
Thanks: 22
Thanked 131 Times in 81 Posts
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Yikes. Don't know of a tool/website that will tell you that.
This is how i work it:
Bolt Pattern has to be 5x120
Hub size can be 72.5 (e60 default) or 74 (e39 uses 74 and you would need hubcentric rings, which is just little plastic piece to fill in the little bit from 72.5 to 74)
Will the wheel clear the rotors/calipers: common problem however new cars seem to give a lot more clearance with the different wheel designs so on the e60 this wont be a real problem. E39 bbs RGR's will not clear BBK for instance. Really just looking on the forums and asking around will answer this. Like i said I really don't know much that wont clear on the e60
offset: stock is 8.5 et 12 9.5 et 28. Lot of aftermarket wheels for our cars w/o using spacers run 9 et 6-9 10.5 et 27-29 So i like to play in these ranges, and figure out what size spacer would take to get to or close, without going past the more aggressive sizing. If i need a larger spacer then 15mm i give up on the rim.
I think thats it.
To answer your question:
E39 will require hubcentric rings. 74-> 72.5
Offset is 8 et 20 9.5 et 22
Which if you were to compare vs our stock rims:
Front: -2mm innter clearance +14mm outer clearance. Which would fit but would probably want spacers! To make them look good/aggressive you would need a hefty size spacer like 25mm
Rear: +6mm inner clearance -6mm outer clearance. Spacing should be fine. depending on how you spacer the front you may want to make the rear even. If you went 25mm front spacer i would follow the rear with a 5mm.
Most 18' rims should clear our rotors/calipers and with spacers i can't imagine a problem. I wouldn't recommend this setup though as the front would have a large spacer.
Last edited by Vodyk; 28th November 2009 at 09:10.
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08 ///M5 Black Sapphire/Black 
Linear Mode
