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    shanus's Avatar
    shanus Posts: 17, Reputation: 0
    New Member
     
    #1

    Sep 22, 2005, 06:35 PM
    Tyres
    I have two sets of tyres for my 4x4 Hilux
    205R16 & 31x10.5R15

    what do these figures mean? How do you work out the dimensions of your tyre from these?

    also I'm fairly sure these are 15inch tyres, I want to get bigger tyres, 16's, will the vehicle be able to handle bigger tyres without any problems?
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member
     
    #2

    Sep 22, 2005, 09:25 PM
    ''205R16'' Usually there is a third number like the P205 55 16's on my car. ''P'' means passenger, the tire is 205 mm wide, and fits on a 16'' rim, yeah, consistent. The 55 means it is 55% as high as wide. 205mm/25.4mm/in(.55)(2) + 16 gives you the overall diameter in inches. I think that is what the 31 in ''31x10.5R15'' is, 10.5'' wide, and fits on a 15'' rim.

    Usually you can use a slightly larger tire without it rubbing the wheel well, or only slightly on bumps and turns.

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