We have a hunter 9700 machine and it is nice, but there is no need to do a road force to get a balance job. Road force and balance are two seperate functions but balance does show up when doing a rf check. If you first did a dynamic balance check then did a rf check the imbalance of the tire and wheel would be the same. The rf just checks to see if there is a hard spot on the tire that can cause a shake or vibration--usually is evedent about 68-77 mph and then disappears. As it was said previously, have them road forced and just see what the number (lbs) is. The limit is 24 lbs but here at the cadillac dealership I work at GM recommends 18 lbs or less on devilles and 12 lbs and less for sevilles. If the rf is within specs than there is no need to do anything but balance them and the stick on weights can be placed as far forward on the inside of the wheel as the spokes. The thing is that even with the weights placed as far forward as possible a shimmy is going to be felt at some speed regardless becasue of how they are balanced. The alternative is weights on the outside of the wheel if possible---but a little shake is okay with me for the ride and handling of the car not to mention looks