Flexible pavements are subjected to vehicular loads which can affect their performance and decrease the service life due to various reasons, including rutting. The performance of a flexible pavement over its design life is directly related to parameters, such as stresses, strains, and deflections, that are induced due to wheel loads. The experimental models used in earlier rutting-related pavement performance studies mainly relied on empirical correlations and did not fully simulate the actual field conditions. This paper addresses limitations by presenting a laboratory investigation using a comprehensive flexible pavement model, employing a roller compactor cum rut-analyser (RCRA). The RCRA rutting model correlates wheel load passes with rut depth, aligning measured and predicted values, reflecting model accuracy. Concurrently, strain responses during rutting were measured, validating flexible pavement conduct at different interfaces. Highlighting the RCRA rutting and strain response models’ capability to simulate in-service pavement behaviour is noteworthy. The method suitably monitors strain responses in flexible pavement layers under wheel loads, eliminating the necessity for in-situ measurements.