New sumitomo tire strange tread wear - Mustang Evolution

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Old 06-29-2013, 08:45 PM   #1
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New sumitomo tire strange tread wear

I bought some wheels and tires from American Muscle in the spring. They have about 3000 miles on them and my car started to sound like I had a bad wheel bearing on drivers side front.
I pulled the wheel off to check and noticed the inside tread had real strange wear.

Hard to explain but 'every other' tread "lug" looks like a ramp. You can feel it when you rub your hand across, and see it.
Every other lug is low on the back and ramps up to the front (to the height of the next lug)

The good lugs in between are flat like they should be.
It's only the one tire the rest are fine. I rotated it to the back and it's definitely what was making the noise.

Anyone seen this before? I've never seen a tire do this, what would cause this?
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Old 06-29-2013, 09:22 PM   #2
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yeah i use to see this all the time when i worked in a tire shop. usually an indication you need an alignment
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Old 06-29-2013, 09:23 PM   #3
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yeah i use to see this all the time when i worked in a tire shop. usually an indication you need an alignment
Just had it aligned before the tires.
I've seen even tread wear before when it needs an alignment but not this, not every other lug.
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Old 06-29-2013, 09:29 PM   #4
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always get it aligned after the new tires never before. believe it or not doing it before can make things worse when new tires are put on.
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Old 06-29-2013, 09:33 PM   #5
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always get it aligned after the new tires never before. believe it or not doing it before can make things worse when new tires are put on.
I've never heard that. So I wasted my money then?
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Old 06-29-2013, 09:43 PM   #6
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I've never heard that. So I wasted my money then?
Yep you need to go get a new alignment
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Old 06-29-2013, 09:44 PM   #7
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well never hurts to see if the shop will redo the alignment since it's only been a bit over 3k miles..just run the feathered tires on the back and do a few burn outs..it'll wear even over time though as you drive. but if you don't get the alignment i'd say the ones you just rotated will feather sooner or later
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Old 06-30-2013, 11:29 AM   #8
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Thanks for your input guys,

I've done some reading on feathering of the inside of the tire and it looks like the toe-out is the main cause. Maybe I'll have them do a little less negative camber too if that's possible.

Going to take it in on Tuesday and see if I can get an alignment. See how much it's off.
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Old 07-01-2013, 09:01 AM   #9
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Quote:
Originally Posted by maverick214 View Post
I bought some wheels and tires from American Muscle in the spring. They have about 3000 miles on them and my car started to sound like I had a bad wheel bearing on drivers side front.
I pulled the wheel off to check and noticed the inside tread had real strange wear.

Hard to explain but 'every other' tread "lug" looks like a ramp. You can feel it when you rub your hand across, and see it.
Every other lug is low on the back and ramps up to the front (to the height of the next lug)

The good lugs in between are flat like they should be.
It's only the one tire the rest are fine. I rotated it to the back and it's definitely what was making the noise.

Anyone seen this before? I've never seen a tire do this, what would cause this?
Quote:
Originally Posted by maverick214 View Post
Thanks for your input guys,

I've done some reading on feathering of the inside of the tire and it looks like the toe-out is the main cause. Maybe I'll have them do a little less negative camber too if that's possible.

Going to take it in on Tuesday and see if I can get an alignment. See how much it's off.
I'm glad to hear you've got it figured out. The Toe-out being off is definitely what is causing this! I would recommend taking it in for alignment asap, before the tires get any worse. Like these guys said, you always want to get an alignment after new tires are mounted on the car!

I hope this helps! Please let me know if you have any questions or need some assistance in the near future. Our Mustang Experts are here Monday-Friday from 9AM-9PM EST and Saturdays from 9AM-5:30PM EST. If you want to hit them up, their number is 866.727.1266.

-Dan
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