Abstract
The slippage of various sizes tractors under similar operating conditions can be compared based on the traction coefficient. However, a preliminary prediction of tractor drive tire slippage is problematic because the numerical expression of tire inflation pressure is not directly included in known mathematical models. The purpose of this study is to find a method for predicting the slippage of a tractor's driving tires, which includes a numerical expression of the tire inflation pressure. Based on the results of experimental studies of Case Farmall 115U MFWD tractor equipped with radial-ply tires, on wheat stubble on a loam soil, a method was developed to predict tire slippage based on the traction coefficient by estimating the tire inflation pressure. The obtained empirical equation allows to theoretical prediction of drive tire slippage in 4WD and 2WD modes, estimating the radial-ply tire inflation pressure in the range of 70–195 kPa.
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