I may have missed it, but what are the specifics and dimensions of the wheels and tires? I'm planning to buy summer wheels and tires this summer and want to get as many ideas as possible. Right now I'm considering 20x10" Style 299 or BBS SV wheels with 275/45R20 tires.

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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim
2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim