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Old Apr 3, 2017 | 10:56 AM
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Tire Wear Question

What would cause the outside 2" of the front passenger tire and the inside 2" of the driver's tire to wear excessively?
 
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Old Apr 3, 2017 | 11:25 AM
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I'm sure someone else will chime in, but I'd start with alignment, ball joints upper, lower and tie rods. It's strange that it would be the inside of one and the outside of the other.
 
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Old Apr 3, 2017 | 12:03 PM
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I left out that it is 4WD, so the only alignment is toe.
 
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Old Apr 3, 2017 | 12:20 PM
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Originally Posted by tom_sprecher
I left out that it is 4WD, so the only alignment is toe.
No it's not

Go get an alignment. Caster is pretty much set from the factory, but there are options. Worn bushings could have it off.

I'm guessing you have worn ball joints and your camber is off.
 
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Old Apr 3, 2017 | 12:55 PM
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Originally Posted by Ron94150
No it's not

Go get an alignment. Caster is pretty much set from the factory, but there are options. Worn bushings could have it off.

I'm guessing you have worn ball joints and your camber is off.
How do you adjust caster and camber on a solid front axle? I have a caster/camber and toe gauge and have aligned many race cars (struts, double A arms, etc.) and can not see any adjustment where I can align the solid axle except for toe.

Care to explain how to make adjustments?
 
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Old Apr 3, 2017 | 01:08 PM
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Take the nut off of the top ball joint on the drivers side and you'll see the brass adjuster - though again, it is set at the factory and chances are that your issues are worn components on the front end and possibly tires. Is it lifted?

Jack up the axle so the tires are free, use a pry bar or 2x4 under the wheel to lift and expose the worn ball joints between axle yoke and spindle. Turn the wheel to expose worn hub/bearring unit. Crawl under and watch the track bar as someone else tries to move/pry the axle.

Diagnos and repair first, then adjust.
 
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Old Apr 3, 2017 | 01:23 PM
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Originally Posted by Copper.Farm
Take the nut off of the top ball joint on the drivers side and you'll see the brass adjuster - though again, it is set at the factory and chances are that your issues are worn components on the front end and possibly tires. Is it lifted?

Jack up the axle so the tires are free, use a pry bar or 2x4 under the wheel to lift and expose the worn ball joints between axle yoke and spindle. Turn the wheel to expose worn hub/bearring unit. Crawl under and watch the track bar as someone else tries to move/pry the axle.

Diagnos and repair first, then adjust.
Thanks for the info and I will try your suggestions. It is not lifted.

I definitely want to diagnose first. I've done the ball joints on my '91 Wrangler, but only because I was doing a gear swap to 4.10's. I really don't want to dig into this thing any further than needed.
 
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Old Apr 3, 2017 | 06:46 PM
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Only camber and/or toe will cause tire wear on sholders
 
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Old Apr 3, 2017 | 07:25 PM
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Originally Posted by tom_sprecher
I left out that it is 4WD, so the only alignment is toe.
sounds seriously out of alignment. One toed in and one out. I have my 2005 king ranch 4x4 f350 dually aligned if I feel it drifting when I let go of the wheel.
 
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Old Apr 3, 2017 | 08:33 PM
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Originally Posted by tom_sprecher
How do you adjust caster and camber on a solid front axle? I have a caster/camber and toe gauge and have aligned many race cars (struts, double A arms, etc.) and can not see any adjustment where I can align the solid axle except for toe.

Care to explain how to make adjustments?
Copper.farm answered your question about camber, I said there are options with caster. A couple company's are making adjustable caster bushings. But it is locked in from the factory. Worn bushings will effect it. Again, I don't think caster is your problem though.
 
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Old Apr 4, 2017 | 07:20 AM
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I'm NOT suggesting you try one of those DIY alignments. But look at the video below. Use this method to just see if your toe is way off. Keep in mind that some alignment specs call for a few degrees toe in. I'd still have a proper alignment machine look at it. We use Hunter Engineering at work. Even if the alignment is "not adjustable", there are numerous options for correcting it. I'm not familiar with these Ford ball joint adjustments, but you can usually purchase offset ball joints from Moog.

Also shake down the front steering and suspension. Usually a bad wheel bearing, ball joint, or tie rod will wear the inner portion of the tire. Outer edge is usually from an alignment issue.

 
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Old Apr 4, 2017 | 10:35 AM
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Originally Posted by JeepGuy93
I'm NOT suggesting you try one of those DIY alignments. But look at the video below. Use this method to just see if your toe is way off. Keep in mind that some alignment specs call for a few degrees toe in. I'd still have a proper alignment machine look at it. We use Hunter Engineering at work. Even if the alignment is "not adjustable", there are numerous options for correcting it. I'm not familiar with these Ford ball joint adjustments, but you can usually purchase offset ball joints from Moog.

Also shake down the front steering and suspension. Usually a bad wheel bearing, ball joint, or tie rod will wear the inner portion of the tire. Outer edge is usually from an alignment issue.

https://youtu.be/OzN0Z2HupcM
Not completely true, just because its wearing on the inside doesn't mean it is or isnt an alignment issue or worn part. too much negative toe will cause inner wear too much positive toe will cause outer wear, excessive negative camber will cause inner wear while excessive positive camber will cause outer wear. If all suspension components are tight and no play it is 100% an alignment issue
 
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Old Apr 4, 2017 | 12:53 PM
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I didn't make that clear enough. What I meant to say was:

Bad parts usually only wear the inner edge of the tire. Bad alignment could wear either edge.

I've never seen bad parts cause outer wear.
 
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Old Apr 4, 2017 | 01:00 PM
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No worries jeep guy simple misunderstanding, bent suspension could also be tight and cause wear on tires although usually you will experience some type of bad pull or issues with steering returning to center after a turn
 
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Old Apr 4, 2017 | 01:07 PM
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Good thought on the bent suspension. What front axles do these beasts have? I've thought the 250+ models had either Dana 44s or Dana 60s. If so, a bent axle yoke or knuckle could cause wear. On IFS trucks, the lower control arm could be bent to cause outer wear.
 
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