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			Bigdog, it could be your tires, even if they're new. The first set I put on my cars were out of round and no amount of balancing, regular spin or road force or on-car balancing was going to correct it. And my problem occurred at 80 or so... 
 
Try two new tires on the front first and see if that fixes it.
		 
		
		
		
		
		
		
		
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