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Why are some vehicles tires filled with water? What is the reason behind it. Is it done for all the vehicles or only heavy vehicles?

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  • What examples have you found?
    – Solar Mike
    Jul 16, 2018 at 11:53
  • In tractors I have found them
    – user40021
    Jul 16, 2018 at 11:54

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This is common practice in the agricultural industry ( I worked as a agricultural contract driver) as it is an easy and cheap way of adding weight to the tractor when needed.

It works as the relatively low rotating speed of the wheels ( tends to be the rear mostly) means the water stays in the bottom part of the wheel.

Edit: the extra weight can also be to help balance the tractor if you are using a front loader for example.

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  • Why do we need to add weight to tractor
    – user40021
    Jul 16, 2018 at 16:03
  • @user40021 to push through mud.
    – Ben
    Jul 16, 2018 at 16:21
  • @user40021 - As Ben said, which also means more traction.
    – Pᴀᴜʟsᴛᴇʀ2 ♦
    Jul 16, 2018 at 16:41
  • Instead of adding weight in the rear wheels can we add weight on the rear side of vehicle and produce same traction??
    – user40021
    Jul 26, 2018 at 11:37
  • Yes, weight can be used - why do you think trailers have to be loaded so carefully...
    – Solar Mike
    Jul 26, 2018 at 11:39

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