zed88

Hey Guys,
I'm not a suspension expert but I recently had noticeable wear on my inner front drivers side tire. Awhile back I replaced the rear toe arms since they were frozen and got everything aligned about 7k miles ago with no weird tire wear noted at the time.


Looking at these results does anything stand out that would cause this kind of wear? Anything else I should be checking?

I forgot to mention that the alignment posted above was just done today not 7k miles ago. The rest of my suspension appears to be in good shape except possibly the front compliance bushings.

Turbonut

iTrader: (1)

It would have been better to replace the arms with adjustable units, but that's water over the dam.
As far as alignment, the front probably was on the back at one time as the camber is slightly out at -1.9. Really only way one tire can wear on the inside.

nfnsquared

OP, the tire brand has nothing to do with the wear.

A correction to Turbo's comment: The rear toe arms are indeed adjustable. It sure looks to me that your alignment tech was lazy and didn't bother to pop the lock nuts and adjust the rear toe arms. He should have at least tried to get the left toe closer to 0.

Yes, everything except for the right rear camber is within specs. -1.9 is not grossly out of spec, but you'll need to keep an eye on the rear toe on that side or you could see rapid inside edge wear if toe gets out of spec.

And note that any weight you put in the back seat and/or trunk will make your rear camber go even more negative.

I'd recommend spending $150 for the SPC adjustable rear camber arms. It's an easy DIY:

https://acurazine.com/forums/tires-w...-091-a-816065/

Also, when were the tires last rotated? What rotation pattern are you using?

The DWS is asymmetric. Double check to be sure they were mounted correctly.

Steven Bell

iTrader: (2)

The guys are right-time for a rear camber kit.

Turbonut

iTrader: (1)

That's correct, but I guess I should have made my thoughts clearer. The camber is out so if he purchased both aftermarket arms each side, the camber could be adjusted. My reasoning is that the 2 Acura lower control arms are $189 (list) while the 4 aftermarket pcs could be had for @ $175.

zed88

HI Guys. Thanks for all the feedback. I will look into installing the spc arms and then take it back for an adjustment. I'll also ask that they try and zero out the rear toe instead of just making sure its in spec (if it really matters).


I did replace the rear toe arms with oem ones again around 85k miles after they were frozen.


On a sidenote my front compliance bushings are just cracked slightly. What negative effects other than road feedback/steering feel are likely to result if they are not changed? Will that accelerate wear on other suspension components, or damage anything? Unfournatley money is tight right now and while normally I'd change them I should wait if I can.

zed88

Also I forgot to mention I rotated tires front to back and X cross over every 7-8k miles.

nfnsquared

Good plan IMO.

As far as the compliance bushings go, I really doubt that slight cracking would cause any serious issues.

And I always look the tech "in the eyes" and tell him I expect the toe to be set as close to 0 as possible. I make it clear that just being "in spec" is not good enough.

Turbonut

iTrader: (1)

Yup, slight cracking normal.
Zero at all 4 corners is the way to go.


OP-Quick question, was the inside tread wear smooth or feathered?

zed88

The wear was feathered a little bit. Certainly not super smooth like regular wear. It also crept up on me in the form of slight vibration at certain highspeeds (assuming caused by mild feathering) and increased roadnoise as the inside wore down. I could probably post a picture but it does not look like much, just wore down 2mm more than the outside (maybe 2 on inside, and 4-5 on the outside).


It just bothered me that it was on the one tire only, and I'll probably end up replacing all the tires before 30k miles because of one extra worn one


Are there any good diy tutorials on installing the spc camber arms? I know its supposed to be easy but I like to read up first.

nfnsquared

Yep, link is in post #3.

ECRD

Your main issue is why that left front tire wore out on the inside.

So why is everyone talking about rear wear issues and suggesting rear camber kits and so on? Shouldn't we focus on the front?

Your rear tires have no wear issues it was the front right?
That -1.9 right rear camber is nothing and won't cause any irregular wear. It will just wear normally.

nfnsquared

^^^^fixed.

We're assuming the wear occurred before that tire was rotated to the front?

And I agree, -1.9 camber is not terrible on an unloaded car. However, adding any weight to the rear of the car changes everything.

anx1300c

iTrader: (2)

-1.9 doesn't sound too bad in theory, but my RR is -2.1 vs -1.5 for my LR and man does that right side cup Conti DW's fast. Granted, the DW is a super soft summer tire, but it cups within a few thousand miles. I can only rotate side to side since my F14s have staggered offsets.

I plan on buying the DWS for my stock wheels and at least I can rotate them front to rear, so I hope they wear as well as the Potenza 960s did. They show some accelerated inside wear, but never cupped, which is what causes the noise.

nfnsquared

Oh crap, just realized that I posted the wrong link. Here's the correct link to the SPC arm DIY. You DO NOT need to swap out the boots.

https://acurazine.com/forums/tires-w...t-boot-886608/