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Thread: 205/40/18 what does each number mean?

  
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    Cunny's Avatar
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    205/40/18 what does each number mean?

    As above really, i know the 18 is the size of my alloys but what exactly does the others mean...can i have different sizes or do i have to stick to this size?
    Sometimes I Wonder...Why do I live in this region

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    Tire Width
    205

    Aspect Ratio ( how thick the side wall is)
    40

    Diameter
    18

    Load Weight
    (should be figures eg 82)


    Speed Rating
    (Should be a letter or 2 e.g H )
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    thanks ham
    Sometimes I Wonder...Why do I live in this region

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    i though the 40 was the hight of the side wall so 40% of 205

    unless that is what you sed and im beingt thick

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    lee gsi's Avatar
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    Quote Originally Posted by autoSRI View Post
    i though the 40 was the hight of the side wall so 40% of 205

    unless that is what you sed and im beingt thick
    That is correct
    The truth is always the truth even if you haven't realised it yet...

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