I have a question about steering stability on my 86 4runner, 4” SAS with 35’s. The truck runs straight without out a problem at any speed unless I hit a groove or bump in the road and start to wobble. The wobble is not uncontrollable and goes away, though want to ask if I can achieve more stability. I believe all my steering geometry is correct with 1/8” toe-in and caster at 5 degree for 4” sas. I’ve also gone through and retightened everything after around 100 miles of driving, including steering stubs, u-bolts, and wheel/knuckle bearings. The two things I can think of is shackle stability or it’s just the tires gripping the road. I have the TG shackles with the bushing to fill the gap between shackle and string. Would these create an issue for side to side movement since you can’t tightening them down too much? Any ideas or possible solutions would be appreciated?
Thanks again,