I took all the old tire/wheels to the tire shop a couple at a time and had the new ones mounted and balanced. On a side note I had a Recurring Vibration in the frontend, it would go away for a few miles then be back at any speed. It ended up being bent front wheels, they would get in a position where the bend in each wheel cancelled each other out, then gradually return while driving as the wheels bend was in line with each other. Those new 10 lug 19.5 steel wheels from Accuride are about $325 each but well worth it to eliminate the vibration . The new wheels are supposed to be stronger too.