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Alright, well you're both wrong in terms of what bumpsteer is. Bumpsteer is simple, it's the change in toe with vertical wheel travel. I don't know for certain if these cars are set up with mild or no bumpsteer from the factory, but from the looks of the suspension, it's not much at all. The Wolf, you kinda had the right idea for a little, but then missed it at the end.
Bumpsteer occurs because the wheel and the tie rod are following different arcs. Meaning that the lca and the tie rod are changing lengths at different rates which cause a difference of forces at the spindle. So essentially with a gain of toe in, the tie rod is pushing the back of the wheel out when the wheel moves up. This happens all the time, whenever there is any suspension movement, it's very noticeable on rough pavement, but is occuring all the time.
Bumpsteer adjustment can take place in to locations on the car. The first and most common is at the tie rod end. The spacers added to the tie rod end, space down the tie rod so it is closer to being parallel with the lower control arm. This will allow both arms to travel similar arcs. Bumpsteer can also be adjusted by shimming the inboard pivot point, like most of the steering spacers do. But these usually negatively affect the bumpsteer curve. So by adding these spacers you're adding some bumpsteer instead of helping to remove it. But basically, if you were trying to shim this inboard point, you would want the pivots of both the tie rod and the lower control arm to be along the same longitudinal line.
But in general, bumpsteer is just a kinematic thing. The real determination of bumpsteer, without actually measuring it on the car, has to do with the instant centers and relative motion of all the suspension members. But that's a little harder to explain here, and the above explanation should be more than enough for now. The rear though, is a whole different story, but I doubt most people even realize the effect of bumpsteer on the rear of the car.
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