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      02-04-2013, 04:20 PM   #20
F30AM
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Drives: F30 330d M Sport sDrive
Join Date: Aug 2012
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Quote:
Originally Posted by kitster View Post
Without sounding like a thicko, the 19" alloys are diamond cut...what exactly does that mean?
From what little I know, 18" are cast and then painted. 19" are cast, painted and then the face is machined on a high speed lathe. They call them diamond cut.

Read these:
http://www.thewheelspecialist.co.uk/...amond-cutting/
http://www.wickedwheels.co.uk/diamond-cutting.html

See this:
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