Radial Wabble Problem

[Roger K Fain]

In your description of the problem you left out many of the possible contributing factors. What is happening to the vehicle is the suspension is unloading upon deceleration and finding weak points in the structure or geometry. The radials are a major contributor to the reaction of the suspension, but not the initiater. If you have a four-link suspension, you may have a problem with your wishbone flexing, bending, or just loose in the mounting.Check to ensure that all connecting points of bars are sufficiently secured and not allowed to "wobble", thus keeping the car in a straight line until the suspension collects itself.
Additionally, make sure the front suspension reacts equally in separation and compression and is totally fluid in movement.