Actual issues of theory of wheels rolling of tractor

In the work are stated some actual issues of theory of rolling of tractor¿s wheels. At this are taking into account relief of supporting surface and rheological properties of soils. Are considered general issues of theory of rolling of wheeled tractor¿s wheels as well as actual issues of theory of rolling of special tandem wheeled self-propelled chassis created for operation in row-spacing of perennial planting in order to reduce compaction of soil and infinitely variable adjustment of clearance depending on height of plant. Also are considered actual issues of operation of machine-tractor units on slope, including impact of lateral displacement on efficiency at operation in transversal direction of slope, optimal power saturation of tractor in mountainous conditions, etc. For specialists in field of dynamics of wheeled systems, PhD students and students