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Tyre sizes can I use this ???

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  • 25-07-2010 9:07pm
    #1
    rilly99
    Registered Users Posts: 221 ✭✭


    I have to change two of my tyres 205/60/R16 92h

    The spare is brand new but the size on it is 205/55/R16 91h

    What do you think ? what do the numbers mean ?:confused:

    thanks


Comments

  • Options
    #2
    VeVeX
    Registered Users Posts: 1,389 ✭✭✭VeVeX


    You cant mix them sizes.


  • Options
    #3
    MakaDonVeli
    Registered Users Posts: 891 ✭✭✭MakaDonVeli


    Make sure there 'E' marked aswell.

    Required for NCT.


  • Options
    #4
    dub7_2010
    Closed Accounts Posts: 89 ✭✭dub7_2010


    the 205 is the tyre width
    the 60 is the height in relation to width
    i.e. 60% of 205=123
    55% of 205=112.75

    So having different sizes is not a good idea.
    Firstly it can effect handing.
    Second it with fail NCT
    Third can cause ABS fault and the tyre circumference will be different causing the ABS speed sensor to get different readings.


  • Options
    #5
    rilly99
    Registered Users Posts: 221 ✭✭rilly99


    VeVeX wrote: »
    You cant mix them sizes.

    would you mind telling me why ?

    I have no problem going back to garage even if it two years later if they gave me wrong size ? I can even tell thme it failed nct as it was incorrect


  • Options
    #6
    rilly99
    Registered Users Posts: 221 ✭✭rilly99


    dub7_2010 wrote: »
    the 205 is the tyre width
    the 60 is the height in relation to width
    i.e. 60% of 205=123
    55% of 205=112.75

    So having different sizes is not a good idea.
    Firstly it can effect handing.
    Second it with fail NCT
    Third can cause ABS fault and the tyre circumference will be different causing the ABS speed sensor to get different readings.


    I had requested the garage concerned ( main dealer ) to swop the doughnut for a standard tyre. are covered as it would probably do for a spare ????


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  • Options
    #7
    dub7_2010
    Closed Accounts Posts: 89 ✭✭dub7_2010


    If they fit incorrect size then get them to replace foc.
    If they say no then threaten to report them to SIMI as the put potentially
    unsafe tyres on your car and see how fast they change them.
    Probably just and honest mistake on their part though.


  • Options
    #8
    rilly99
    Registered Users Posts: 221 ✭✭rilly99


    dub7_2010 wrote: »
    If they fit incorrect size then get them to replace foc.
    If they say no then threaten to report them to SIMI as the put potentially
    unsafe tyres on your car and see how fast they change them.
    Probably just and honest mistake on their part though.

    I know what you saying and I have no problem going back even after two years but it is the spare ??


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