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What pressure to maintain?

Recommended inflation pressure varies according to the load, the type of work being done, and the work surface. Particular machine-specific recommendations are based on the most demanding use conditions and on the maximum power and traction capacity of the machine. The goal is to ensure that the tire functions normally even when the load is unevenly distributed between the tires on steep slopes. In addition, tire manufacturers can offer recommendations based on their experience.

Running at wrong pressures can has a direct effect on tire wear and soil compaction but also on the vehicle performance. Wrong pressures can result in remarkable (20-40 %) waste of engine power due to tire slipping or increased rolling resistance. Consequently, incorrect tire pressures also have a severe financial impact, which could have been avoided. 

Complying with the recommended pressure ensures that the tire achieves its planned service life. Similarly, good inflation pressure maintenance is the only way to ensure the tire's reliability in all conditions. A visual check is easy to make every day or whenever working with the machine. On the market, there are also specific led-based pressure indicators, which give a warning when the tire pressure is below the recommended level. Tire pressure should always be checked in association with other vehicle services, such as oil change, even though the visual check or tire performance indicated no drop in pressure. After all, a slowly starting leak can cause sidewall damage or initiate tube damages even before the pressure change is reflected in the driving properties. 

A regular pressure check is the key of ensuring the achievement of optimum performance both for the tires and the tractor.

What if the tire pressure is too low?

Low tire pressure can lead to sidewall damage and chafing against the rim. There is also a danger that the tire rotates on the rim or damages the tube, especially during heavy draft work. Low tire pressure leads to loss of power through flexing and having too much of the tire in contact with the ground, and, consequently, to an increase in fuel consumption. It also causes heat to build up in the rubber, which makes the tire wear faster. If you are working in cold weather conditions (frost), keep in mind that the air inside the tire shrinks down when it freezes, which lowers the tire pressure. When using the tires in cold winter conditions, it is possible to inflate the tires to a slightly higher pressure. When transporting tires, it is recommended to reduce the inflation pressure due to safety reasons.

What if the tire pressure is too high?

Although the most immediate effect of over-inflation is poor use comfort, running tires at too high pressures can also cause a number of other problems. Excessively high pressure weakens the tire's puncture resistance and deteriorates the tire's ability to rolling over cleats or obstacles. When driving on rough roads with obstacles, the tire does not give in, which increases the vibration and shaking experienced by the machine operator. Grip is also reduced, because the contact area with the ground gets smaller giving less traction. Additionally, a too high tire pressure lengthens the time that the tire needs to reach its operative temperature, thus shortening the tire's service life. Compared to overpressure in a hydraulic system, excessive pressure causes a similar burden to the tire. Most importantly, excessively high tire pressure is a clear safety risk. The maximum pressure, defined by the manufacturer, may only be slightly exceeded when it is necessary to adjust to cold weather conditions.

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