We have already started on run-flats, but not finished yet, I'm afraid. It seems there is another big issue if you swop from run-flats (RFTs) to conventional tyres. A tyre supplier tells me, " BMWs with RFTs have softer suspension to absorb these road shocks. Also the suspension allows superb handling provided that the tyres contact patch can be maintained. To do this the wheels vertical position (camber) is tilted, and along with suspension and geometry adjustments, allows both tyre and suspension to follow the same radii thus maintaining that all important tyre contact patch." So, if changing to conventional tyres, do we have to get the suspension and wheel camber changed too? Sounds complicated and skilled work. Has anyone experience of getting this work done, please?