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Doesn't seem to be unique to RFT's. I normally equate it to softer, sportier tires. My old car had Michelin PS2's and Michelin PSS's that lifted the paint from my old garage floor, and also left black spots on my current concrete floor. Our previous 1er came on RFT's and left black marks with those and with the replacement non RFT's too.
Are your Goodyears summer tires? What about the Jag's tires? I find that all season or snow tires don't seem to leave nearly as much behind as pure summer tires.
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