Need help with Steering problem! on 1990 Ford Bronco

I just put brand new tires on the rear of my Bronco and now i'm having problems with the front end. The problem is when driving down a straight roadway my bronco wants to go left or right on its own without me turning the steering wheel.But when i try to correct the problem it pulls hard in the direction in try to correct, say it pulls right when i correct it by easing to the left, it jerks left. I have put brand new bushings and and front end components in it within the last 6 months and now this starts. If you have an answer please help.

by in Arcadia, FL on June 30, 2012
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1 answer
ANSWER by , July 05, 2012
Eliminate the old tires as a cause , by switching the new tires to the front.reply with any new info/changes in steering reaction.