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Other practices like ballasting

Liquid ballasting

Liquid ballasting is commonly used for agricultural tires to increase vehicle stability. The tire can be liquid filled in order to increase tractive power by extra weight and simultaneously lower the centre of gravity. In water ballasting, 75 % (max) of the tire volume is filled with water. In order to lower the freezing point of the liquid, salt (or ethylene glycol) can be added to the water in areas with a risk of freezing.

Liquid ballasting requires special equipment and water permeable valves, so it is recommended to always let tire professionals carry out the ballasting procedure. Tubes are needed to prevent rims from rusting during the process.

Adding liquid

To add the liquid:

  1. Jack the wheel up and position the valve at the highest point.
  2. Remove the valve core and connect an air-water fill and draining valve to the chunk. Air can be removed through the valve at the same time when the water is entering.
  3. Introduce the liquid into the tire until liquid starts to issue from the valve. No overfilling!
  4. Replace the valve body and inflate the tire to the recommended operating pressure. 
  5. After anti-freeze ballasting, clean all metal parts in order to avoid corrosion.


  • Always use pumps with rust resistant pressure gauges.
  • Always use safety glasses and protective workwear.
  • In water-salt ballasting, pour the calcium chloride into the water (never vice versa!)
  • When using another liquid than water (e.g. polyurethane), the warranties for the tire do not apply.
  • After liquid ballasting, the tire has only 25 % air of its original volume, so regular inflations pressure measurements are recommended.

Tyre care type: