My wheels go to negative camber when backing up, but if you are going forward they are straight. Any ideas as to what could cause this?

 

More info please on the vehicle?

Rich

 

what year truck do you have? i have seen that before. its alot worse on the earlier hd trucks. i had a new 95 F250 and where i parked at work i had to back in and the first time i saw that i panicked but it is normal. when you back up it puts force on the suspension parts forward and down . the older the truck (more miles) the worse it gets.

 

It is a 91 F250 4x4. It only has 57,000 original miles. It did have a camper on it though.

 

Because you have twin i beam or twin traction beam, the camber is constantly changing on your truck. You have to look at static loaded camber. When in reverse, weight transfers to the front so it will squat more and cause what you are probably seeing.

 

yea normal for a twin I-beam front end on ur truck...

just the way the front end geometry goes throu its travel..

more noticable when going backwards...

 

What I want to know is how you even noticed this sitting inside the truck?