Man you've done a lot of work to address this, but I think you've always suspected the tires. Old tires can do some strange things especially if the PO did unknown to you things like plugs in the tires. Road Force balancing will balance a spinning wheel even if the tire has uneven wear. Put it on the ground though and that square tire will not roll smoothly anymore (exaggeration for effect). A flat spotted tire can be balanced but will never roll smoothly again.
Last edited by 911monty; 04-27-2017 at 05:29 PM.
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