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Motors FAQ>Wheels and tyres>Will these tyres fit my car?

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  • 21-12-2005 12:29am
    #1
    colm_mcm
    Registered Users Posts: 73,455 ✭✭✭✭


    Understanding tyre sizes

    66sh.jpg

    1 Section width:
    This is the width of the tyre, measured in millimeters

    2 Aspect ratio/profile:
    This measures the height of the tyres sidewall as a percentage of the section width.
    For example, a 195/50 R16 tyre has a sidewall height of 97.5mm, a 215/50 R16 tyre has a sidewall height of 107.5mm

    3 Rim size:
    This is the size of rim the tyre is designed to fit, measured in inches.

    4 Load index:
    This value determines the amount of weight a tyre can carry. Lower profile tyres tend to have lower ratings. If you are replacing your tyres, is is important to have tyres with the same rating or a higher rating than the standard tyre size.

    5 Speed rating
    The speed rating of any tyre is a measurement of the max safe speed the tyre can carry a load under specified conditions. It is also shows how the tyre will handle at lower speeds. A higher rated tyre will give you better traction and improved steering response.

    Click here to use a tyre size comparison tool



    Related to this:
    Will these wheels fit my car?


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