Quote:
Originally Posted by NHM550
I replaced the RF on my porsche with Michelin PS4. I'm not a fan of run flats, noisy, tread wear is bad and they don't ride nearly as well as nonRF counterparts. My wife's m550 came with primacy 3 RF and they will be getting swapped in the spring for PS4 as well. I have AAA and will get the spare donut for road trips. On a side note, I have seen RF's shred apart on the highway and most recently a friend X5 had a RF come apart on the highway and took out their fender and bumper.
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The two tires that did this for me were definitely not run-flats. The one tire that was heavily damaged with loosening of its belt structure did not damage the car or shred apart: a Continental RSS Run Flat.