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I would remove the tires one by one and place them on a spin balancer; as the balacer spins, the technician needs to watch the horizon of the tire for a out of round condition and/or bent rim.( a out of round tire can be "in-balance" but still shake your teeth loose.) If your vehicle has a drive shaft vs axle shaft look very closely at the universal joints . I hope this helps you. Mark

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โˆ™ 2005-11-24 04:14:38
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Q: Why does a mid-engine rwd car vibrate in the rear ONLY when you accelerate above 60 in 3rd 4th and 5th gear even after 3 tire balancings an alignment and faily new struts and bearings?
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