personally I like it without the rear fender flares, as the wheels look too sunk in when the flares are on the truck, then I'd have to add spacers to push them back out and then I'm back to where I started, so WHY do all that when the x looks sick hot with a set of factory 20's and the newly added iS rear diffuser.
I love how it looks on my X

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S