I live in Maine and I am running Style 210 wheels with dedicated winter tires. I am planning to use four new 20x10" wheels with summer tires. Square is the right choice for me. I am considering Michelin or Vredestein summer 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