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Excessive wear on inner rear tyre BMW 520d

  • 28-08-2014 4:28pm
    #1
    Wailin
    Registered Users, Registered Users 2 Posts: 4,437 ✭✭✭


    Have the car about a month now and checked the tyres before purchase and they looked fine. Today I had a look at them again and noticed very bad wear on the rear drivers wheel on the inside that I didn't (but should have) spotted at first inspection. The passenger rear has a small amount of wear at the same side but much less (pics below). Front tyres are fine. I contacted the dealer who is replacing both tyres (run flats) immediately. Is this a common issue with BMW's due to the rear wheel drive or is it an alignment problem, particularly if it is worse on one side than the other? I have also read somewhere that this is more of a problem on run flats due to the harder nature of the tyres.

    Driver side rear wheel
    15063427932_60213a51bb_c.jpgIMG_4829 copy by Wailin..., on Flickr

    Passenger rear
    15063778335_7db4b714e8_c.jpgIMG_4831 copy by Wailin..., on Flickr


Comments

  • #2
    deandean
    Registered Users, Registered Users 2 Posts: 2,243 ✭✭✭deandean


    Under-inflated runflats can wear like that.


  • #3
    visual
    Closed Accounts Posts: 3,267 ✭✭✭visual


    Rear suspension ball joint causes the camber to be off and inner tyre ware.

    The ball joint is on the other side of the nut in picture.

    I just done my own you need a press or bmw extraction tool to get ball joint out and new one back in.


  • #4
    Wailin
    Registered Users, Registered Users 2 Posts: 4,437 ✭✭✭Wailin


    visual wrote: »
    Rear suspension ball joint causes the camber to be off and inner tyre ware.

    The ball joint is on the other side of the nut in picture.

    I just done my own you need a press or bmw extraction tool to get ball joint out and new one back in.

    Don't think its a job I could do myself after looking it up on youtube. Is there any way I can tell it is actually the balljoint that's causing the problem? Any telltale signs that it needs changing (apart from the tyre wear!)? Thanks.


  • #5
    visual
    Closed Accounts Posts: 3,267 ✭✭✭visual


    Jack it up at rear and use jack stands.

    With a big screwdriver or pry bar you can push and pull against where that big bolt meets the bearing if there is any movement the bearing is faulty.

    Its a common fault on the BMs epically e39

    Expect to pay 500 euro for a garage to do it for you. (Both sides)

    I bought a suspension repair kit that included all control arms and drop links thing it was 230 from ebay for both sides.

    I did see the suspension bearings much cheaper 50 or 60 euro a pair.

    But you really need the extraction tool but its costs best part of 200 euro to buy.
    I tried using big bolt and washer but the bolt kept snapping and I couldnt get high tensile bolt in the size I needed.

    It is a bugger of a job to do without the right tool.
    Took me a day just to remove one side with lots of unrepeatable words. But it is possible to DIY


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