The paper is in a sense, a sequel to the paper published by the Society of Automotive Engineers, in 1974.
It reports corrections, refinements, validation and extension of bevameter methods in parametric analyses of pneumatic tire - soils systems.
Considerations of tire detailed dimensions, form, internal structure, configuration (duals, singles), tread design, inflation pressure, load and cost are discussed in the realm of off-road machinery.
Predictability of vehicle performances is illustrated in various soils by numerical examples and test results. Mineral and organic soils and snow are considered.
The work has been based to a large extent on recent studies performed by the author for Canadian and Italian National Research Councils.