well I did it... I took it to Firestone and paid 40.00 for the RF. The first tire was a number 9 , then a number 11, then a number 13 then.... A 26 ! Too much, machine said it couldnt be adjusted, the tech tried to rotate the tire to match mount and see if he could get it below 20.
This was the rear right side tire. He couldnt get it on. So I went up the street where I purchased them and the mgr let me take 3 new ones off the shelf. So I went back and we broke down and remounted a new on, came back as a number 24 still to high and again couldnt be adjusted.
So... he check the lateral and radial runout of the rim and it was on the money. He remounted another and it came up 15 ! Well within spec, he balanced and put it on. It is much better not sure if its perfect but I will be driving it 500 miles tomorrow so fingers are crossed !'
The concept of the machine is a good one. If I still have a vib at least I know tires and rims are not the reason. Again I have check everything else I can think of..
I still feel it may be something touching the frame or the floor transmitting the road vib to the floor. Well we shall see. If this isnt it my tranny guy said bring it up and we will run it on the lift.