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OK so I stand corrected... but explain why when using thinner to clean WW tires there is white paint on the rag when finished?
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Thats easy, because youre softening the rubber and removing a slight bit of the colored material along with the grime. You're not going to ever remove it all though, as it is a part of the tire as stated above... if you rub a solvent soaked rag on a blackwall tire it will leave the rag with black on it too...that doesn't mean you're at risk of rubbing through to the air inside.