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      12-07-2012, 08:53 PM   #3
frankzlin79
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Drives: 2014 335i M Sport
Join Date: Oct 2008
Location: Houston, Texas

iTrader: (5)

Ok seems like the trend is if the car doesn't have much options and is lighter you get x1 or x2.

If you have more options (like sunroof) then you get a higher x number.

Since I have an E90 with a sunroof, I'm guessing the set of springs labeled x3 are the ones that came off my E90.

Does that sound right?