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Auto Doc: Potholes and performance tires

A car hits a pothole as it makes

(Credit: John Dunn)

Dear Doctor: I drive a 2011 Corvette Grand Sport with factory recommended Goodyear run-flat tires. The wheels are the standard mag wheels that come with the car. I hit potholes on two successive days. Now the car vibrates between 30 and 40 mph and between 70 and 80 mph. The Chevrolet service manager advised me over the telephone that it sounded to him that I lost a wheel weight.

I brought...

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Do-it-Yourselfers find repair procedures online

An illuminated service engine light is shown. (Aug.

(Credit: AP Photo.)

Dear Doctor: I own a 2008 BMW 5 Series and try to do most of the maintenance myself. The service light illuminated on the dash panel, so I called the local shop to find out how to reset the light and he said to check with the dealer. I called the dealer and they said it would be $75 to reset the light. Where can I get the procedure and tune-up specifications for my 2008 BMW? Gary

Dear Gary:...

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