Quote:
Originally Posted by Large Arbor
One of the front has cupping on it and vibrates much at 70 mph.
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Cupping is alignment, or front end component wear related - good idea to get everything checked out under there before you start grinding the edges off a new set of tires
regarding the vibration - Look for a shop in your area that has a Hunter Road-Force balancing machine. It costs a little more to do a road force balance, but in my experience, it's worth it, especially on lightweight cars running big tires...