I'm thinking of puting on spacers on my X.

I have Aero Pack, 21 215's and i think they will look good on the X but i have some questions to you guys, some of you have them on the X and i need you to speak from your experience.

1. Which size do you suggest?
2. Any difference in handling turning?

Thanks in advance

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---2008 X5 With All Factory Options

---2002 Black S 500 Designo Edition