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      10-11-2012, 05:21 PM   #7
Mako
2000 M Roadster (sold), 2006 M Coupe (sold)
 
Drives: '12 X3 35i M Spt '13 335 M Spt
Join Date: Jul 2009
Location: Chicago

Posts: 1,318
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Quote:
Originally Posted by PeteNJ View Post
OEM 18s are ET34, a bit concerned that the 17x8 Rials are ET29 which I am guessing means they sit more tucked in?
No ET29 means they stick out more. The offset is how far from the center of the wheel the mount is. So the smaller the number it means the closer to the center of the wheel it will be mounted. Larger offset means it will be "tucked in" more. If you look at an M3 for instance the rear offset is something like ET27 because the wheel wells are flared out more so the wheel needs to stick out more, also helps handling a tiny bit...
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