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how interesting. my tires still have more than 50% thread left, but i do have the whiring drone between 50 -> 55 and then 70 -> 65

I'm hoping it's the tires.
I had PS3 on my B7 DTM with no issues. Then when I replaced all 4 with new PS4 I picked up a drone at 55>. I have PS4S on my A5 and no issues. So I am thinking the drone may be a characteristic of the PS4.
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