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Thread: Tyre load ratings for Vectra 3.0 CDTi

  1. #1
    Regular Member spatch's Avatar
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    Default Tyre load ratings for Vectra 3.0 CDTi

    I have just discovered that my 3.0 CDTi Vectra was sold to me with 91Y (standard load) tyres on it.

    It is a well publicised fact on this forum that the 3.0 CDTi should have 94Y or extra load tyres fitted.

    I plan to have a row with the stealer tomorrow but before so I was trying to find where in the manual it says what tyres should be fitted - I could find nothing. Can anyone help me locate this info?

    Lastly, what problems am I likely to see if I keep the normal load tyres on my car, bearing in mind it has been on them for the last 14 months??

    Thanks
    Mark

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    Regular Member Caterman's Avatar
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    Vehicle : Signum

    Trim : Elite

    Engine : 3.2 V6

    Year : 05

    Default

    Yup, Extra load rated tyres are needed due the weight of the engine.

    If you have an accident you may well find the insurance would not pay out.

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    Regular Member m8internet's Avatar
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    The 3.0 V6 CDTI is actually insured on the standard load ratings, you can replace the 95W with 91V
    Details are in the kerb weights index

    However, if you are using the 3.0 V6 CDTI to its design limit, then you really need to stick with the XL tyres
    One of my local police forces also have several such cars and these too are all on the XL tyres

    I was stopped for a tyre check a few months ago and the officer spent 40 minutes going over my front tyres, as he had never seen the specification and we had quite a conversation about it!
    The tyres were down to 1.6mm on the shoulders and 1.0mm in the centre
    After some calculations it was found that the XL tyres have a further 2.5mm of construction material
    The confusing point was that they were 225/45ZR17 on 94Y, in effect the ZR overrates the Y load rating, and they really should be 225/45YR17
    Last edited by m8internet; 18th May 2008 at 22:26.

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    Regular Member spatch's Avatar
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    Thanks chaps, I still cannot see where it explicitly states that the tyres should be extra load in the manual - need to have another better look but I could not see them with a cursory glance. I will have to wait before I speak to the stealer.

    I guess the only thing is to wear them out quickly and replace with XL GSD3's.

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    Full Member Big Sig's Avatar
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    Quote Originally Posted by m8internet View Post
    The 3.0 V6 CDTI is actually insured on the standard load ratings, you can replace the 95W with 91V
    Details are in the kerb weights index

    However, if you are using the 3.0 V6 CDTI to its design limit, then you really need to stick with the XL tyres
    One of my local police forces also have several such cars and these too are all on the XL tyres


    91w etc is just within the weight limit of the 3.0V6 CDTi, but I think the auto is too heavy for them. Its just good pratice to have XL rated ones on as it is so close to the tyres limit. HTH
    Now I need a turbo to keep up!

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    Regular Member spatch's Avatar
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    So, the dealer did not make a mistake by selling the car with normal load tyres on it. He was just running the tyres towards their limit - saving money in the process.

  7. #7
    Full Member Big Sig's Avatar
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    Basically yes I think so. The dealer that sold me mine did the same. I'm not sure what rating they left the factory on, maybe look at a new or nearly new one somewhere and check its tyres?
    Now I need a turbo to keep up!

  8. #8
    Regular Member Caterman's Avatar
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    Vehicle : Signum

    Trim : Elite

    Engine : 3.2 V6

    Year : 05

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    The tyres mine came with were also 91W rated but when i put the 18's on i asked for the extra load tyres. For the couple of quid extra it is not worth the risk. What value can you put on your family as they are the ones at risk should the worst happen

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    Regular Member BIG NEIL's Avatar
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    just checked mine and they are 91w but i am due two front tyres so it might put 94y's on.

  10. #10
    Full Member Big Sig's Avatar
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    I'll echo what Caterman said. When my tyres are due for changing, XL's will be going on.
    Now I need a turbo to keep up!

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