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Bridgestone sidewall cracking

Discussion in 'Bodywork, Tyres, Wheels & Trim' started by Jkh112, Jun 9, 2018.

  1. Jkh112

    Jkh112 Senior Member

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    Your Mercedes:
    E350 Bluetec estate
    A while ago I noticed cracking around the edges of the rear tyres on my 212 estate.
    The tyres are the original Bridgestone potenza re050a and are 4 years old covering 20k miles.
    The cracks run around the circumference on the shoulder where the tread meets the sidewall.
    Today I took the car in to have a slow puncture fixed and two tyre places refused to fix the puncture due to these cracks.
    I have had a pair of new tyres fitted but am wondering what caused the cracks.
    The front tyres show no signs of cracking so why the rears? Is this common on these tyres/cars?
     
  2. Flyinspanner

    Flyinspanner Senior Member

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    Always check the manufacture date on tyres, even if they are “new” they may have been in storage for years!

    It’s a little lozenge with a 4 digit number, ie 1418 would be made in the 14th week of 2018.
     
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  3. OP
    Jkh112

    Jkh112 Senior Member

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    The tyre place checked the date, the tyres are only just over 4years old.
     
  4. drmw

    drmw Moderator

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    So were mine - according to Bridgestone "the first time" - yea, sure.

    It's not a uncommon fault. Mine blew out at quite a speed which is fortunate as at a slower it would have been difficult to say the least.
     
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  5. OP
    Jkh112

    Jkh112 Senior Member

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    Fortunate to blow out at speed! Did you mean to write that?
     
  6. DREAMER NO2

    DREAMER NO2 Senior Member

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    Jkh The problem is the sun , it will remove the flexibility from the rubber over time .And the rear tires need to be supple to flex as they move over rough roads more so than the fronts . The signs you have are common to hard rubber on the side walls .
    To keep your tires in tip top condition you need to spray them with a silicon spray . Or a rubber treatment and conditioner .My car sits in the sun all day .I use silicon to keep the rubber from going hard .The other thing i use is the cloth type covers that the spray shop use to cover the wheels as they spray the body. And you can find them on ebay . They have a steel wire going through them so easy to fit ==== Dont over do the tires with silicon ,it will get on to the brake disc and calipers .
     
  7. OP
    Jkh112

    Jkh112 Senior Member

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    I am not so sure it purely down to UV from the sun. The front tyres show no signs of cracking whilst the rears only had cracking in a circumferential ring right on the shoulder.
    I have had tyres of older age on other cars with no such issues.
    One of the tyres places said it looked like a manufacturing fault with tyres whilst the other place talked about overloading the car.
    Either way it doesn’t matter as I won’t be taking it any further and won’t be fitting Bridgestone tyres again just interested to see if it was common on these cars.
     
  8. DREAMER NO2

    DREAMER NO2 Senior Member

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    Your Mercedes:
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    Like everything now they get poor in quality as years go by . Soon they will be on the mot on how old they are .Over 2 years and it will be changing time
     
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