[daddywine]

Thanks in advance for any expertise regarding the following questions.
I am in the final stage of purchasing a 2011 BMW X5 35d with the Sport Package (hence sport suspension). Part of the deal is that the owner is going to switch out the current 20” sport wheels for the BMW M611 wheels (from the newer X5M or X6M) and a new set of non run flat Pirelli P Zero tires. The Pirelli P Zeros are 285/40/20 up front and 325/35/20 in the rear. The specs for the original sport wheels (Y Spoke) are 20 x 10 with 40 mm offset up front and 20 x 11 with a 37 mm offset in the rear. The M611 wheels are 20 x 10 with a 40 mm offset in the front and 20 x 11.5 with a 38 mm offset in the rear.
I would like to confirm that this new setup with the M611 staggered wheels and Pirelli P Zero tires will fit and not pose any unforeseen problems or need any spacers or other addition to work properly. Also, will the ecu need to be reprogrammed after installation of this new tire/wheel combination to insure the speedometer and mileage gauge are accurate?