The challenges of advanced driver assistance systems development bring a necessity to describe a complex tire motion, which incorporates non-steady-state rolling, combined slip and a whole range of slip up to 100%.

Empirical description of such a complex mode requires much more experimental work than for convenient steady-state rolling with sideslip only. FE-models are time-consuming and usually not reasonable for handling analysis in case of flat rigid road surface. These issues motivate an investigation of physical background of tire behaviour, as long as physical model is able to respond to any correct excitation it receives.

The paper describes a modular combination of several simplified physical blocks of tire model: model of carcass deflection, model of tread shear, friction model and later thermal model. These models are selected and parametrized with help of separate measurements of tire carcass and tread properties.

Due to two-dimensional contact patch deformation distribution inside of its area is provided avoiding FE-method. It refines the simulation quality of lateral force and aligning torque, makes it possible to estimate remaining grip potential in any contact point during the non-steady-state tire excitation, what is necessary nowadays for further development of advanced driver assistance systems control algorithms.