I just replaced a set of tires with almost 70k miles on them. They wore dead even across the tread. I can get over 40k on a set of UHP summer tires on my M5. Abnormal or excessive tire wear is not "normal" for BMWs or any other vehicles. Abnormal or excessive tire wear is a result of misalignment due to ignorance, a specific desire or a broken/worn suspension component. Learn what your alignment numbers mean and how they contribute to tire wear and actual vehicle handling and keep up on your vehicle maintenance.

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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