I have those same tires on my 214s (Michelin Latitude all seasons). They ride fine, but there is one thing you should be aware of before purchasing - the tread width on the front tires (275/40/20) is smaller than normal and it looks a little odd.

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2008 X5 4.8i, Jet Black, Tobacco Nevada leather & just about everything else (no vent. seats, no 3rd row)