Not right - front tires worn on outside edges

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Art in Phoenix

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2021
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6.7 diesel HO
11/4/2023 Update: The dealership checked alignment and inspected all associated components and found everything within factory specs. I asked them to show me which they did. That part was a relief to confirm I wasn't having any parts failures. I drive very conservatively as I plan to own this truck for at least 20 years. I did discuss tire rotation with the mechanic and didn't have confidence in his knowledge. He explained the reason the last dealership didn't rotate tires was that my inboard tires were on steel rims whereas the outboard wheels are chrome. I mentioned the owner's manual explains to only exchange inner for inner and outer for outer as the TPMS requires these positions (screenshot attached). He didn't know anything about that. We discussed factory specs and I decided to leave things as they are - here's my reasoning albeit could be flawed. First, I tend to not modify anything staying more a purist with my stuff. I didn't even uncork my early 2000s Honda XR650R to get more power though the bike is still pristine. Second, I thought about that solid axel and the immense weight the Cummins 6.7 puts up front and the compromises the engineers had to make to get it all to perform for a long time and my guess was it came down to this - the customer buys new front tires @ 35K miles or lets make it real tricky up front on a 4X4 to do exotic stuff. I'd bet they'd hear a lot more about customers having to spend $$$ for front ends than they do right now on tires - just my guess.

Anyway, I found a terrific tire shop there in town (dealer didn't have my tire size) and everything is operating as it should.

I was impressed with the tire shop if anyone's interested: Bailey Tire Company, Sparta TN (just south of Cookeville Tennessee).

Thanks everyone for your input.
Art

Original Post: I have to replace my front tires at 35,000 miles as this uneven wear has made them unbalanced but also taken the tread off on the outside 2 inches. My dealership said this was normal 15,000 miles ago. I thought he was blowin smoke but now I've seen a few comments that might support his claim. I still find this hard to accept.

My experience with any other vehicle would say this is an alignment issue but not so with RAM? How can this be?

2021 RAM 3500 Limited Longhorn crew cab 4X4 long box
6.7L I6 Cummins HO Turbo Diesel 50 Gal fuel

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ibike

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Just bought new tires for mine. The old tires had similar wear as yours not as bad. I’m watching the new tires to see how they wear, and so far I’m not seeing the same wear. 5000 miles on them and will rotate them in a day or two. I suspected alignment but not seeing the proof in this set yet.
 

06 Dodge

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What mileage are you rotating your tires and what rotation pattern are you using? On my 2006 2500 4x4 for over 16 years I used the back tires to front and crossed the front tires to rear, I never ever saw uneven tire wear like that even before I replace tie rod ends, drag link, pit man arm an a few other parts...
 

Dyeelitt

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I had similar wear on 1 tire. Rotated 5000 miles or less. Had the front end aligned a couple of times and it was out the first time. Put Michelin Defender LTX and so far after 1600 miles all is good. Will keep my eye on them. Traction is significantly better than the OE Bridgestone
 

Dean2

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I agree with SD, that wear is the result of bad alignment. Even without rotating tires the outside edge should not have that much extra wear. Google the Thuren Alignment specifications. Have your front end aligned to those specs. Then rotate your tires regularly, you won't have these issue any more.

This provides a very good explanation. Despite the title it also covers 3500.

 

turkeybird56

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Find a good alignment shop, and rotate your tires every 5K. This is an alignment issue, no matter what anyone tells you.
Yup, alignment for sure. Does help to rotate tires on a good schedule and also check and run Proper PSI also.
 

tjfdesmo

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^^^ 100% ^^^ Find a competent shop that will use Thuren specs. Many will not deviate from factory specs. Keep looking 'til you find the right shop. If you are in Phx, I use Firebird Tire on 19th Ave. for my last dually, and will again when my '24 comes in. Bring the Thuren printout with you.
 

GeorgiaTrains

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I have a dually and experience the same thing but, have you noticed the wear on the R/F is worse? I have had my alignment checked numerous times and it is always dead on. The resident "red neck expert" at my Ram dealer told me all Rams with the 6.7 diesel wear on the right front tire due to torque from the engine. The Cummins is a beast we all know. Rotate the two front tires often. I am taking that as a fact and continue to rotate knowing my front tires will not last as long as the 4 on the rear.
 
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