For some reason, when I hit bumps, the truck changes direction. I have a 1990 Bronco with a 302 and it is an automatic. It can be dangerous at times. I was told that a bad caster or camber could cause this. I noticed it mostly when I had the new tires put on it --- I had dunlop A/Ts installed in place of the knobbies. The knobbies could have masked the problem as they really don't stick to the road. When I hit a bump, it almost has some extra hop and it changes direction. Does or has anyone else experienced this? I have had this truck 2 years in august. I want to call a local shop on this issue to see what can be found --- but I wanted to see if you all experienced anything like this. Thanks, Todd