Replaced two front tyres on my 6-year-old Z4 with Bridgestone Potenza, as these were on the car when I bought it from new. The front driver's side was original, with 54,700 miles on and the other (replaced at 17,000 miles due to a screw in it) had done 37,000 miles. I wanted to replace both before a long road trip as they were getting worn. For me, the durability and long life of these run flats is excellent. According to the tyre fitter, the older tyre was in better condition than the younger one, despite some signs of cracking due to its age.
I also recently had to replace one of the rear tyres due to a puncture...the tyre had part of a house key embedded in it. I was able to drive the 20 or so miles to the dealer to get the tyre replaced - so run flats do work!
Nothing - they do the job!
Driving Style: Conservative
Annual Mileage: 9000
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