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Old 03-29-2021, 08:21 AM   #1
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Tire wear issue - Suspected Ball Joints

I have been noticing excessive tire wear on the right front tire outside edge only. All other tires look good.
Being a 2002 Newmar on Spartan Chassis the ball joint boots are cracked and I have been adding grease at times with a needle. I really thought they must have now worn bad enough to cause a tire wear issue. This morning raised it up and checked for movement. Did not notice anything excess, could not see any for that matter.
Given the single tire edge wearing did not think toe was the issue and would not think camber should change unless joints wore out. For the most part it tracks and handles well might be a slight pull to the right which I always attributed to the crown in the roads and riding in the right lane.
Any other areas to review before I bite the the bullet and take it to an alignment shop?

Right Front Tire
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Right Rear and all others look like this.
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Old 03-29-2021, 09:05 AM   #2
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That is bad wear .
Is the same amount of wear visible all the way around the tire ?

How old are the tires?
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Old 03-29-2021, 10:11 AM   #3
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Tire wear issue - Suspected Ball Joints

Tires are about 5 years old. Wear is only the outside edge and only the right front and yes even wear on the circumference.
Too much positive camber is my thought. Worn out ball joints or ride height too high on this corner. I am going to check ride height this afternoon.
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Old 03-29-2021, 10:28 AM   #4
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Just checked ride height and it is dead on factory specs.
The left side tire is showing some slight wear on the outer edge. Click image for larger version

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Old 03-30-2021, 02:32 PM   #5
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What is air pressure?....How many miles are on these tires....

You should be able to jack coach up, check ball-joints with a prybar under tire. any movement = bad.....

But, I'd also look at all tie-rod ends and the center-link ends as well before taking it to alignment shop.

You'd also be better perpared if you had the Reyco service manual on this suspension that shows the alignment specs..some front end shops arn't used to seeing it...I think there's a sticky in this fourm with it
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Old 03-30-2021, 03:27 PM   #6
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Running 105 on the fronts based on my weighing coach.
Have roughly 40,000 miles on them.

I did Jack it up and could not notice any play in the ball joints.
Prying up on tire only lifted entire assembly, watched ball joints and could see no movement. Tie rod ends seem tight.

I found an old thread that mentioned IFS can wear a tire like I am seeing and seems to be related to the actual tires.

I have a copy of the manual if they are not sure of the specs. or procedure.
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Old 03-30-2021, 08:03 PM   #7
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Time for a 4-wheel/total alignment. If the thrust angle is off the front tires can wear oddly trying to go straight.
Download the Reyco-Granning IFS pdf and take the alignment specs to the shop. When I had mine aligned their computer contained incorrect specs. Found that out driving home. I returned with the pdf copy, they re-aligned to correct specs. They had to tighten-up the steering box free play a bit, now it steers almost like my Silverado.
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Old 03-31-2021, 06:39 AM   #8
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I have an appointment Friday for the alignment. Hopefully they can provide some insight on the issue.
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Old 03-31-2021, 09:21 AM   #9
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After reading a lot of past post like the one below. I am having second thoughts on my problem being an alignment issue.
https://www.irv2.com/forums/f59/stra...ar-282017.html

I have noticed this outer edge slowly get worse over 40,000 miles and 6 years. Beginning to wonder if it is just a “normal” condition based on the info from Michelin below. Rivering or shoulder step.
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Ball joints, tie rods etc all seem tight. Coach drives well without vibrations and tracks fairly straight. Slight pull to right but I attribute that more to the crown when riding in right lane.
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Old 03-31-2021, 06:57 PM   #10
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That chart seems identify the problem alright. Regrettably the last line is the final answer.
I suppose a tire rotation to put the fronts on one side dual setup might delay replacements; or reverse the tires on front rims. Tire diameters must be within 1/4" of each other though.https://www.truckinginfo.com/154830/...-tires-at-once
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Old 03-31-2021, 07:15 PM   #11
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Wild guess here but if your rig has track/hardpan bars--you might also check the end bushing on the bars for deterioration...
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Old 03-31-2021, 07:24 PM   #12
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This might sound counter-intuitive to some but you might want to check if your front end is too heavy.
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Old 03-31-2021, 07:33 PM   #13
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Quote:
Originally Posted by TandW View Post
This might sound counter-intuitive to some but you might want to check if your front end is too heavy.


I had the weights checked and well within limits of coach and tire pressures adjusted accordingly. Under inflation/overweight would most likely wear inner and outer edges i would think.
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Old 03-31-2021, 07:46 PM   #14
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I had this type of wear with original tires. And I had moved them to the rear, but once the "rivering" got started on the affected tires, placement had no effect and they only got worse. My coach was outfitted with bags in the front coil springs and they failed regularly at 2 year intervals. Tired of the nonsense, I made a concerted effort to keep all weight as far aft as possible and stopped replacing those airbags. When the tires were replaced they began wearing normally.
Just sharing my experiences. Good luck with your solution!!
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