Dont get cheap chinese ones off ebay, not for the x5 but also dont get the runflats from dealer. Get the DWS06 from an ebay seller and get it mounted locally or even try Dunn tire or similar and have them price match the online price, sometimes they will. Added bonus, if you get tires from them and get it mounted, any future flat repairs will be free.

Mine had a puncture, i went to Dunn and was surprised the previous owner had bought them from Dunn, so i didnt pay anything for a proper patch job.

Long story short, shop around and ask for price match and dont use dealer.

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2011 35d