I have a 2005 BMW 535D M Sport Touring with standard 235/40R18 wheels and tyres. 6 months ago, when planning a routine 4-wheel tyre change at Micheldever Tyres, they informed me that both rear wheels had cracked. Remarkably the local BMW dealer had 2 wheels on the shelf which, at £450 each, was a huge surprise. Micheldever said that this type of wheel failure was very common with BMW and that the runflat tyres were a significant contributing factor. I had been considering coming off RFTs as they badly affect the ride and so made the decision to fit Dunlop SP Sport. The ride was dramatically different and I was very pleased with the result. I contacted BMW customer service to complain about the wheels and to say that they weren’t interested would be an understatement. They blamed UK roads and said that it was likely that I hit speed humps too fast. Last week I had a slow puncture and arranged for my local tyre fitter to try and repair the puncture. They were not able to do this and worse still informed me that the rim had cracked. On further inspection another rim had cracked as well. Once again these were on the back axle and were the rims that had been purchased from the BMW dealer in Winchester only a few months prior. The tyre fitter then mentioned that they are getting these all the time with BMW and that one driver had even had 6 rims. I decided to take a bit of time thinking about what to do this time and have taken the decision to fit aftermarket rims. I don’t know if this is going to turn out to be a good decision but I just can’t afford t o replace wheels at the rate BMW would appear to think is normal. I drive approximately 30k miles per year with a large amount of these on motorways. I have driven this kind of mileage for 25 years and have never had to replace a wheel before.