what the heck is wrong with my front end?

[97powerstroker]

so im starting to get annoyed by this issue,every time i back up somewhere in a parking spot or am just backing into a driveway,my front tires bow in like crazy,like there collapsing.its not just a little bit either,its embarrasing.then when i pull forward the straighten out.so ive heard my balljoints could be doing it if there bad or there the adjustable kind,and i know there not bad so what is wrong.

[2005F250]

Thats common for I beam front suspensions. All the I beam vehicles I see do this.

[bigcountrysg]

Your camber and caster are off. Really doesn't affect much besides tire wear. It can be expensive to fix as well. Because of the shims that need to be used to correct the camber and caster. It cost me around 300 dollars to have mine fix once. It is what you get with the twin I beam suspension.

In the close up picture of the ball joint. You can see the shims I am refering too.

[HVAC SuperTech]

I dont have that problem, although I think I have a diff. susp setup than the OBS

[bigcountrysg]

Originally Posted by HVAC SuperTech

I dont have that problem, although I think I have a diff. susp setup than the OBS

You have a straight axle. The truck in question has the Twin I beam independent suspension.

[97powerstroker]

but what i dont understand is why it only does it when i back up? driving straight there fine.

[Tikal]

Jack your truck up, grab the tire and kinda jerk it back and forth like your tryin to "flip the wheel over"....If there's any movement that's a pretty good indicator of needing ball joints IIRC

[Tikal]

Kinda looks in that one pic like the tire is just trying to roll?
Heck I dunno man

[jfines@cox.net]

I have a 2WD OBS and it does NOT do this. Even before I replaced the ball joints.
My neighbor's gasser 4x4 does it real bad when backing.

[alberta 7.3]

If your toe-in/out is out of whack, you will have the "ride-up" effect, as the tires are tracking inward as you back up. I had the same issue on my 89 Ranger after a lift, before the alignment