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Java's F450 RV

Java230 said:
Anyone have an idea why this thing eats drivers front tires? I did alignment awhile Back..... But just that one side?
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Recent pics? Any chance that your front and read diff ratios are slightly different? It's been years, but I think I remember Broncos or something had ratios that were off just enough to cause some funky wear.
 
JNHEscher said:
Recent pics? Any chance that your front and read diff ratios are slightly different? It's been years, but I think I remember Broncos or something had ratios that were off just enough to cause some funky wear.
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It's factory, I'd hope the ratio is the same! And it's been in 2wd for months

Drivers side. Outer edge is roasted.
16306869990449046062151361553915.jpg



Pass side, outer is also wearing but not as bad. And treads are more even.
1630687063852248462789854598952.jpg
 
I don't see any scrubbing that would be indicative of toe misalignment. Can you stick a level on the wheels to eyeball camber angle? Camber would have to be quite a ways positive to make that wear pattern, but worth a look. How often do you figure that you're making tight turns on pavement? The more positive the caster angle, the more the top of the inside tire will lean outward and ride on the outer tread. Maybe turn it full lock one way and stand back to take a pic so we can see if the tires stand on the outer row of tread blocks.
 
JNHEscher said:
I don't see any scrubbing that would be indicative of toe misalignment. Can you stick a level on the wheels to eyeball camber angle? Camber would have to be quite a ways positive to make that wear pattern, but worth a look. How often do you figure that you're making tight turns on pavement? The more positive the caster angle, the more the top of the inside tire will lean outward and ride on the outer tread. Maybe turn it full lock one way and stand back to take a pic so we can see if the tires stand on the outer row of tread blocks.
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Tight turns on pavement.... All the time? Well twisty mountain roads anyway.

But with solid axle, camber is pretty set isn't it?
 
Java230 said:
Tight turns on pavement.... All the time? Well twisty mountain roads anyway.

But with solid axle, camber is pretty set isn't it?
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Camber should be tight set as long as no play in any joints. Caster has me wonder if it's tipped way back and causing the tires to ride on the outside row of tread blocks. Steering doesn't float around while driving?
 
JNHEscher said:
Camber should be tight set as long as no play in any joints. Caster has me wonder if it's tipped way back and causing the tires to ride on the outside row of tread blocks. Steering doesn't float around while driving?
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Could be caster....I have a lift and didn't do drop brackets?
 
JNHEscher said:
Lift with no drops should move the caster angle more negative, if I'm not mistaken. Still curious to see pics of the tires with it turned full lock.
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Caster is reduced by lifting. I am seeing caster correcting blocks that go in the radius arms?
 
Caster usually doesn't effect tire wear till you get crazy amounts of it. Then it's only if you are turning all the time. Highway miles do not do it.
 
Fwiw, my 04 f550 does the same thing, but over a longer time period. Cant figure out why.
 
bdkw1 said:
Caster usually doesn't effect tire wear till you get crazy amounts of it. Then it's only if you are turning all the time. Highway miles do not do it.
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Exactly why I was asking about a pic of the tires turned full lock and how often tight turns are made. Those outer square tread blocks will fade away pretty quickly if they're getting rode on more often than how interstate trips treat the tires.
 
They also have caster/camber bushings in the upper ball joint mount.
 
GLTHFJ60 said:
Fwiw, my 04 f550 does the same thing, but over a longer time period. Cant figure out why.
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Im heavier so maybe that is why mine is faster?

JNHEscher said:
Exactly why I was asking about a pic of the tires turned full lock and how often tight turns are made. Those outer square tread blocks will fade away pretty quickly if they're getting rode on more often than how interstate trips treat the tires.
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Think twisty mountain roads, not tight turns really. I will get a pic at full lock.

SLOWPOKE693 said:
You have slight toe in. My 550 service truck will do that to tires unless I set the toe to exactly zero.
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I do have some toe in. I was under the impression it helped with tracking?

Grendel said:
They also have caster/camber bushings in the upper ball joint mount.
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Hmmm so that could be toast/out of alignment? I don't have a way to measure that with my DIY alignment skills. Maybe its time to get a proper alignment?
 
Java230 said:
Hmmm so that could be toast/out of alignment? I don't have a way to measure that with my DIY alignment skills. Maybe its time to get a proper alignment?
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They do wear... and should be changed when you lifted it, to get back to factory settings.
 
Grendel said:
They do wear... and should be changed when you lifted it, to get back to factory settings.
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In the upper ball joint? Not in the radius arms? Those are where I am seeing the caster adjustment?
 
Hold a level (or other flat bar) vertical across your wheel and hold a angle finder to it. You can at least see if there's a difference between the two.
 
Your turning radius is worse that mine hehe.

I still don't see any smearing that would immediately indicate toe in, but your outside tread sure is worn like toe in. That and it looks a bit like you have bad shocks. Did you recently increase your tire pressure?
 
Java230 said:
Ok full lock pics. Nothing seems loose in the front

20210911_090245.jpg
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Wow thats fucked up. Interesting that you can still see the lines of the tread at the top outer edge and not the bottom, I would guess there are multiple issues going on, suspension/shock and alignment that are compounding each other. I can't imagine a single issue causing that extreme wear without it being obvious what is out of spec.

Heck if you do make any fixes, might want to flip that tire on the rim and run it for a while just to be sure it doesn't keep wearing like that before buying new tires. I normally wouldn't advocate being that cheap, but I'm not sure I could stomach letting a new set of tires be a guinea pig for that.
 
If you check front camber and that tire isn't showing excessive positive camber you have a toe problem.

Set the toe to absolute zero and then flip that tire on the rim to put the bad section inside. Drive a few hundred miles and report back on what the tire looks like now...


Edit: My F550 rolls around at 18,670lbs and is taken offroad (jobsites) constantly. In 90k miles I've had zero front end issues from warn parts.
 
SLOWPOKE693 said:
If you check front camber and that tire isn't showing excessive positive camber you have a toe problem.

Set the toe to absolute zero and then flip that tire on the rim to put the bad section inside. Drive a few hundred miles and report back on what the tire looks like now...


Edit: My F550 rolls around at 18,670lbs and is taken offroad (jobsites) constantly. In 90k miles I've had zero front end issues from warn parts.
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But wouldn't toe do both sides?
 
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