Extreme tire wear.

[vortex2450]

Anyone here know what would cause EXTREME wear on the inside of all 4 tires? Kevin and me looked at it yesterday and it's bad on my 92 MTX. Tires are 235/45/zr17 on OZ Monte Carlo 17x8? rims.

I bought the car with these tires being practically brand new. Drove it 15k miles before it needed an alignment. Wear was normal up to that point. After this so called "alignment" I noticed extreme wear on the insides of all 4 tires when I took the tires off 5 weeks later. The tread is gone and the tire has been eaten into the second steel belt on the last 1" . It's nearly a 45 degree chamfer. The front end had new tie rods, endlinks, and ball joints and Ingalls adjustable strut mounts. The rear is stock.

The offset seems right (38mm maybe?) and I couldn't find any obvious rub marks on the spring boots/strut assembly. The guy never gave me a printout after he aligned it even after multiple attempts to procure it so I can not vouch that he did anything but ruin my tires.

Pictures:
Rear Left

Rear Right

Front Right

Front Left


The more I think about it the more ****** off I get but I can't really do much about it now. Is this simply the toe being ***** or what?

-Josh

 

[rubydist]

lower profile tires are more sensitive to camber issues that taller tires. I can't tell for sure from the pics you posted, but I'm guessing that you have more negative camber than what the tires can handle.

In my experience, if you have toe-out (which can cause wear on the inside edge of the tires) the tires will wear cupped or stepped on the inside, not smoothly as your have.

the most common cause of excessive negative camber on these cars is bad strut mounts and/or lowering springs.

 

[RonPorter]

That kind of wear, that quickly, tells me WAY too much toe-out. Even with drilled spotwelds for more negative camber, they won't wear THAT fast.

 

[vortex2450]

lower profile tires are more sensitive to camber issues that taller tires. I can't tell for sure from the pics you posted, but I'm guessing that you have more negative camber than what the tires can handle.

In my experience, if you have toe-out (which can cause wear on the inside edge of the tires) the tires will wear cupped or stepped on the inside, not smoothly as your have.

the most common cause of excessive negative camber on these cars is bad strut mounts and/or lowering springs.

IT's seems to be a camber issue, at least from what I can tell.

The suspension is Eibachs riding on Tokicos. It rides slightly lower than stock but not more than 1/2" lower. The strut mounts in front are Ingalls adjustable's. The rear's are stockers.

That kind of wear, that quickly, tells me WAY too much toe-out. Even with drilled spotwelds for more negative camber, they won't wear THAT fast.

That could be possible. I have no faith in the mechanic that aligned it, possibly the toe is set out on both tires and they are both pulling outwards.

-Josh

 

[K-Dawg]

That kind of wear, that quickly, tells me WAY too much toe-out. Even with drilled spotwelds for more negative camber, they won't wear THAT fast.

x2. I'd be having a talk with somebody at the alignment shop.