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I have cars with and without run-flats. Early run-flat equipped BMW's suffered from a very harsh ride. I am concerned that with the option to have non-runflats, we will suffer from poor ride quality if we do not select non-runflats.
My first run-flat equipped X5 had a flat when my wife was driving. She would have really struggled to change the tire on an E70. That convinced me of the value.
The Pirelli P Zero run flats on my 335 GT offer good noise control and ride comfort.
Does the new X3 offer a "mobility kit" for non-run flats? I have that in my M3 - it is a can of gunk that should temporarily seal the leak and a special compressor that switches from a gunk/air mix to air.
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