I have found that runflats are only good for getting knots on them and bending wheels. I went for well over 30 years and didn't have a flat until I bought my BMW with runflats. In the last four years I have so far replaced 13 tires on my 535i X Drive M Package.
I have also had 12 original BMW M wheels on it, all from bending from hitting bridge gaps (expansion joints) on the expressway or minor potholes. Runflat tires are really hard on wheels.
I am getting ready to HAVE to put another set of wheels on the car because the M wheels I have on it are all four bent and all four tires have serious knots. Tread still looks like new and only 3 years old, Runflats Suck. This time I am going NON-Runflat.
Ed
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