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  1. S

    Vibration

    LOL! I fully agree!
  2. S

    Vibration

    Looks to be the Goodyear RSA's. The dealership put a set of Michelin Pilot Sport's on and the vibration appears to be gone. The RSA's did have a bad flat-spotting issue but that issue would dissapear after a few miles, unlike the vibration at 67. If you have the RSA's on the car and you have...
  3. S

    Vibration

    Well... the saga continues... the field service engineer stated that they vibration was within the design specs... even stated that he drove an MKS to compare against. He stated that it was actually worse than our SHO. I call BS as this is not my first rodeo. Much less my first car. If...
  4. S

    Vibration

    Still not resolved. The dealer has replaced all 4 tires and road force balanced them again. All 4 wheels were checked. The field service engineer will look at the car on Tuesday. The saga continues....
  5. S

    Vibration

    Yea... that is why I moved the tires to the rear to prove the issue was with one of the front tires... 50/50 troubleshooting... my comment about mass was a poorly veiled attempt at humor... John
  6. S

    Vibration

    Tonight I moved the front tires to the rear and rear to the front... took the car out for another drive, and as I was expecting the vibration cleared up in the steering wheel... I guess there is enough mass in the rear to absorb the vibration. Saturday, I will be going back to the dealer...
  7. S

    Vibration

    Thanks for the input! A bit more info... No preceptible tire wear. The dealer has replaced one tire for a cut in the sidewall. All four tires have been road force balanced twice. Yet the vibration still exists. I am beginning to believe that it is time for a new dealer. John
  8. S

    Vibration

    We purchased our SHO, and we finally took it on a road trip to Flagstaff last weekend. The car has a distinct high frequency vibration that is centered around 67 MPH. You can feel it starting about 50 MPH, but it is worst at 67. The dealer's response is "it's a performance vehicle and it is...

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