Reducing ground pressure through appropriate adjustment of the tyre pressure also has economic benefits for farmers and contractors. In the case of activities such as slurry spreading, silage harvesting and heavy tillage, in particular, the correct tyre pressure protects the soil and so increases the yield. At the same time, the tractive power of the tractor is increased, its fuel consumption is reduced and the service life of the tyres is extended. These benefits increase the cost-effectiveness of both field and machine.