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How much will the roof rails hurt the Cx? How much will the roof rails hurt the Cx?
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Old 3rd April 2007, 13:03   #1
Tiago_
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How much will the roof rails hurt the Cx?
Besides the look that is personal, how much will increase the cx with the roof rails. Be in mind that each 0,007Cx decreased, it will give you 1mph at 200mph. I only like without the roof rails, tourings with with dark colours, tinted windows and suspension lowered. On stock ones, the rails are really a must in the look. Here are some examples (not E61 M5, but it can give you the idea):
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Old 3rd April 2007, 13:39   #2
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Not bad at all....it needs lowering , THEN the racks will look ok...
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Old 3rd April 2007, 20:27   #3
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