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Severe wear on outside edge of passenger rear tyre only

  • 20-09-2021 5:02pm
    #1
    Registered Users Posts: 757 ✭✭✭ BlakeS94


    Hi all,


    As title states, my girlfriends car has severe tyre wear on the outside edge of only the passenger rear tyre, I don't know what could be causing this but the last 2 tyre changes and the same thing has happened to the same spot of the same corner.


    Car is tracking perfectly straight, tyre pressures are checked and corrected regularly and are never 2-3 psi from where they should be.


    Haven't really checked it out just yet, by I'm guessing suspension defects, could bad shocks and/or coil springs cause this kind of wear? Or maybe a trailing arm?


    Car is a 2010 Suzuku Alto SZ4.



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Comments

  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    Here's what it looks like




  • Registered Users Posts: 2,768 ✭✭✭ Xcellor




  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    Shock absorber on that side looks like it's leaking a lot, could that be the cause?




  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    Pic wouldn't attach, took another of the shock absorber and it did attach above. Could this be why tyre is facked?



  • Registered Users Posts: 417 ✭✭ mk7r


    You say its tracking straight but have you any results from a 4 wheel alignment? The wheel could be toed in or have positive camber



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  • Registered Users Posts: 1,307 ✭✭✭ phelixoflaherty


    Used to happen on our Renault Modus.

    One lad said it was Roundabouts.

    The tyres were narrow enough for a tall car like it



  • Posts: 0 [Deleted User]


    The picture is not related by the issue, only leaking strut, rust and something more leaking. If something does not rubbing the tyre (like liner) then you need wheel alignment. Why tyre shop did not address the issue for you? or you just ignored their sales pitch? Look closer the entire rear passenger side suspension. If something need to replacement, it is right thing to do before alignment.



  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    Don't have any printed results but it was 4 wheel aligned at the last tyre change and all was good



  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    There's plenty Of clearance nothing is rubbing the tyre outside edge. The worn shock definitely couldn't be causing it??



  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    Tyres are quite narrow and car is small but narrow and tall aswell. She takes corners fast enough but would that not cause other Tyres to wear also? Other 3 corners are perfect.



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  • Registered Users Posts: 6,695 ✭✭✭ funkey_monkey


    If it was due to a roundabout I would expect the wear to be on the front left not the rear - unless she does drifting around the roundabouts in her Suzuki Alto. Should be very little wear on the rear of one of those things, so something is obviously wrong if it is wearing incorrectly - so get a mechanic to check the suspension at that corner and then do an alignment.

    Would be good to see a photo of it though.



  • Posts: 0 ✭✭ [Deleted User]


    Just a thought if it is evenly worn around the circumference then it's likely that something in the suspension is bent - it's a fairly simple setup at the back of the Alto so has she whacked a kerb/pothole or anything like that?

    A worn out damper (which is what it really is - the spring is the shock absorber 😁) wouldn't cause a regular wear pattern all around - it'd be high/low spots.

    A pic would help.



  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    I'll try to upload another pic of the tyre later this afternoon, it's evenly worn around the outside edge, just looks like a bald tyre on the outside edge all around it.


    She hasn't hit off anything. I had a quick look underneath yesterday everything looks fine except for that leaking damper but I don't want to be changing things and guesswork



  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    Here's the photo, there should be 4 lines of tread.





  • Posts: 0 [Deleted User]


    This is alignment problem. Like I said before, look carefully the rest of the suspension before alignment. Remember, that car is is currently very dangerous and do not go to highway.



  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    It could be an alignment problem, after researching it, it does seem like a knackered shock absorber can throw out the alignment and you could end up with uneven wear like in the photo. I think I'll change the shocks, tyre, and get another 4 wheel alignment done for her, and watch that tyre again after its had some wear to check if its even.



  • Posts: 0 [Deleted User]


    Typically if something fails on suspension, around that area can many suspension parts fail prematurely.



  • Registered Users Posts: 1,038 ✭✭✭ sundodger5


    That wear looks to severe to be just the shock.

    Something bent or broken is my guess.

    If you stand back and look at the car from the rear does the wheel look off camber wise?



  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    My guess is that it's been wearing for a long time that's why it's so bad, I've looked at the car from behind lying down on my stomach and left and right side look identical to the naked eye, also looked down the car from the roof through the tyre and camber looks the same left and right sides, again to the naked eye but nothing looks off to me, I may lift the car at the back, remove both wheels and compare to further investigate. I'm lost really.



  • Registered Users Posts: 1,038 ✭✭✭ sundodger5


    Jack it up and at least give the wheel a good wiggle to see if you have any play in bearings etc.

    I see no feathering on the tyre so i think more camber than tracking.



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  • Registered Users Posts: 2,677 ✭✭✭ 9935452


    Watch the boys do the alignment. Get a printout too.

    I know some lads will tell you its perfect but afterwards you find out some parts for adjusting it are seized so they dont bother adjusting it.

    That and its within tolerance. It can be out but still within spec.



  • Registered Users Posts: 5,426 ✭✭✭ Ubbquittious


    Yea I had one fella tell me it was "grand". Found myself stranded on a motorway in the backarse of Wales a few weeks later with one tyre empty and another about to go



  • Moderators, Sports Moderators Posts: 27,534 Mod ✭✭✭✭ Cass


    9935452 - I know some lads will tell you its perfect but afterwards you find out some parts for adjusting it are seized so they dont bother adjusting it.

    That and its within tolerance. It can be out but still within spec.

    Had this recently with two cars. One was aligned, but they did not straighten the steering wheel so when the steering wheel was straighened, on the drive home, the car would veer left. When I got home I used a string line and adjusted the track rod ends myself. Car is now straight and aligned. Just monitoring rear wheels for excessive wear to be sure.


    The second was a different story. Wasn't tracking right at all after the alignment so I got under it to check. The eccentric bolts on the rear suspension arms were not just rusted but utterly seized. I was in a pit, with a 3 foot pull bar and could not get even an 1/8th of a turn. I ended up using a mini grinder with cutting disc and recipricating saw to remove the bolts, cutting between the bush and inside section of the sub frame where the arms sit into so as not to damage the "ears" that the eccentric washers use to adjust. Once out, the arms, I seen the remnants of the bolts were still seized within the bush of the arm so I ordered two new arms, with bushes, and new eccentric bolts & washers.

    Went back to the garage and asked him why he claimed the car was aligned when he could not have possibly moved the arms. He claimed they were within tolerances. Checked the print out (Hunter machine) and compared it to Ford's settings and while "just in", they were within tolerances. The problem being, other than the lazy so-and-so in the garage who couldn't move the bolts so just claimed it was done, is Ford's tolerances are so broad as to be laughable.

    Goes to show the garage might have the right machine, but its the spanner monkey that needs to know if "within tolerance" is good enough.

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  • Registered Users Posts: 15,201 ✭✭✭✭ Donald Trump


    I was going to suggest that if the excessive wear was happening on the passenger side of your gf's car then you might just need to go on a diet ......



    (joke of course)



  • Moderators, Sports Moderators Posts: 27,534 Mod ✭✭✭✭ Cass


    Ooooooh.......


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  • Registered Users Posts: 2,098 ✭✭✭ Moanin


    Check tryre pressure also in all tyres



  • Registered Users Posts: 2,391 ✭✭✭ FGR


    This! It's infuriating the amount of shops that have expensive equipment but don't know how to use it.

    On a few occasions I've seen the operators put in the wrong model of car so they put the whole alignment out completely.

    It's very important to go to a place that will not only let you see the process but also give you a printout. I drive about an hour to get to a place that has a Hunter Machine and does the job with ocd precision.



  • Registered Users Posts: 2,677 ✭✭✭ 9935452


    A friend of mine used to work in a big chain . He told me a story about cars coming in and the adjustment bolts were seized. One of them would be pushing or pulling the wheels trying to get the car in spec. The other would quickly save the results.

    Customer would get a printout on where the car was and there it is now after their so called adjustment .

    I do agree that some lads cant seem to use their equipment .

    When i got my car , i bought off a family friend . He was telling about the garage that used to service it .they used to take off the wheels , demount the tyres and reverse they . The tracking was out and the car was burning the outside of all the tyres. The tracking was out . First thing i did was get the car tracked which sorted that problem .

    The garage werent able to track it properly so decided the best course of action was to reverse the tyres



  • Moderators, Sports Moderators Posts: 27,534 Mod ✭✭✭✭ Cass


    @BlakeS94 With all the talk of alignment I wonder if the issue of suspension hasn't been lost?

    It was mentioned above about making sure everything is in good and workig order before having alignment done. So look at the usual suspects such as control arms, bushings, drop links, ARBs, trailing arm bush, etc.

    If any of these are worn and allowing the wheel to sit with what seems to be a toe issue then aligning them may temporarily sort the issue but will not fully correct it and will eventually start to wear again.

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  • Registered Users Posts: 757 ✭✭✭ BlakeS94


    I have yet to have a look as I'm caught up in my own trouble with my cars exhaust as you know, id imagine all of those things will be easy enough to change on a small car like the Alto, if needs be



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