Static Lateral Stability of Tractor with Rear Wheel Ballast Weights: Comparison of ISO 16231-2 (2015) with Experimental Data Regarding Tyre Deformation

The paper presents a static lateral stability of sub-compact tractor MT8-070 Mini in relation to safe operation. Axle weight distribution the was measured calculate vertical and longitudinal coordinates centre gravity (COG). Experiments were aimed at equipped with no four levels rear wheel ballast weights (30.5, 61, 91.5 122 kg) standard extended overall width on tyres. A overturning angle calculated experimentally when right wheels touching ground state unstable equilibrium. Comparing experimental data ISO 16231-2 (2015), differences 2.57%, 2.80%, 3.04%, 3.42% 3.88% case tyres 2.40%, 2.61%, 3.11%, 3.67% 3.99% 0, 30.5, kg weight. Considering tyre deformation shift tyre, decreased 0.95%, 1.11%, 1.29%, 1.85% 1.42% (standard tyres) 0.91%, 1.18%, 1.69%, 2.27% 2.57% (extended tyres). length rubber lug contact patch did not change inclined various affect calculation according (2015). Results showed higher comparison (2015) due deformation. Limiting operation basis avoids usage under dangerous conditions.