[vgames33]

Try 2 high and see if the problem changes. 4 high is usually intended for use on slick or wet roads. 4 Low is for off road use or deep snow.

Bearings and tie rods tend to make noise when turning while already moving. A bad tie rod should also cause wandering at high speeds and a sometimes a clunk/rattle when hitting bumps at low speeds (assuming that the rod end is very worn out, a little play won't be noticeable). Bearings can cause the same rattle or wander, but its usually harder to notice. A shudder like you describe usually indicates a binding component.