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I just got new rims and tires. Hub size is 73. Maybe its because I haven't rode on 40 series tires in a long while but it feels like the car is shaking or vibrating. Not real hard but a little. I had the wheels balanced again ad they added hub rings but it still seems a like the car is vibrating still. Any suggestions? I'm going to drive my friends car with the same tire and size as mine to see if there is a difference.