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Stock Problems/IssuesDiscussions related to warranty related issues and repairs, or other problems with the OEM parts and software for MINI Cooper (R50), Cabrio (R52), and Cooper S (R53) MINIs.
The belt is easy. 16mm socket on the tensioner bolt by the supercharger pulley to use as a fulcrum. Alan key in one of the 2 holes towards the back of the tensioner to lift the tensioner up. Then use something long like a pry bar (i use a 30 inch long wood clamp) to release the tension. When it's loose put a small screw driver in the 2nd hole that come out of the back of the spring.
Pretty sure that it's not possible to do the swap from the wheel well.