Tyre pressure for agricultural tyres
An example is probably the best way to offer an insight into the issue of tyre pressure in the agricultural sector. Because situations vary so greatly, a single guideline does not apply to all cases. And an example can help to identify commonly encountered bottlenecks and potential solutions.
Practical tyre pressure in agricultural vehicles
Connected equipment poses a major challenge as far as tyre pressure is concerned, because that's when the biggest load changes are encountered. In certain conditions, the extra weight behind the tractor's centre of gravity serves as a lever, even thought weights are used to avoid this.
Centre of gravity
For example, when a plough is connected to a tractor, there is a big difference between its horizontal position (operational) and its vertical position (during transport), like when driving on the road. The difference in speed for both positions also plays a role. This change in centre of gravity causes the tractor to tilt backwards because the rear axle becomes heavier in relation to the front axle. And this has a negative impact on control and safety when driving on the road.
2 options for tyre pressure on agricultural vehicles
Irrespective of vehicle type, tyre pressure must be adjusted to suit the maximum load. In the above-mentioned situation, pressure in the rear tyres should be doubled (on average). However, this is far from ideal when working in fields. Therefore, tyre pressure should actually be adjusted every time there is a change in surface (and speed). If this is too difficult or impossible, the best option is to select tyres with a large air chamber and the same rolling circumference. However, this option is not always possible due to the width of furrows.
Wheel load and speed
Tyre pressure is determined by the wheel load – this can be calculated on paper or via weighing – and the operating speed. The required pressure can be identified by referring to use tables provided by the tyre manufacturer. Do not use a general table or a table provided by another brand because there are sometimes major differences between the same tyres offered by different brands. The experts at Heuver will help you to find the right tyre, for the right purpose and at the right pressure.
Prevent unnecessary wear and tear on agricultural tyres
It is important to have the right tyre pressure on and off-road so unnecessary wear and tear can be prevented in the profile and casing. Driving at low pressure and high speed results in excessive flexure in the tyre. This leads to excessive tyre pressure and excessive loads on the edge of the tyre. When working in fields, inappropriate tyre pressure can cause agricultural tyres to revolve around the rim and folds to occur in the casing. This increases wear and tear, and makes tyres less efficient.