2 years!!! Hell I wish! I know the original ones were on the 4.8 for 2 years because the service paperwork said the last time they were changed as part of service. When I got the X it was all ok, and then maybe a month in, it started to skip in a section. Then I got the Icons and it has been a 2 month change every time. I actually didn't know those type blades could be serviced... If I did, I would have bought the refills for them and not the regular blades. But maybe next time, I will buy the refills for the Icons because I still have the blades.

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2011 E70 50i M Sport