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2009 One Lap of America - Day 1 - Click above for a hi-res gallery

We've always found that our tires get squirrely in the wet before they fail the old penny test for tread depth. The Tire Rack, supplier of black round things and other accessories, are suggesting that the price of your safety has appreciated by 24 cents. For years, the penny test has been a quick way to turn a common item of pocket detritus into a tread-depth gauge. Hold Abe upside down, and if the tread clears the top of his noggin, you've got at least 2/32nds of an inch of tread. When tread ge

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