Overall vehicle performance optimization is the main target in race car and road hypercar development. Considering the complexity of current vehicles, a holistic approach to analyse the interaction of vehicle dynamics, powertrain cooling system dynamics, brake cooling and human drivers in the same simulation can be vital to maximizing the overall performance (Bouvy et al, 2012). This article is a continuation of a previous article written by Dallara and Claytex (“Race Car Cooling System Model for Real Time use in a Driving Simulator”, Stellato et al, 2023). The previous collaboration describes the implementation of a 1D cooling system model integrated with a vehicle multibody model to be used in the Dallara dynamic driving simulator with human drivers. This collaboration has continued into a new phase, where Dallara has developed a model to optimize the brake cooling of its vehicles, with Claytex’s VeSyMA suite use for the auxiliary vehicle systems and code compilation. The model has been validated through comparison with real data of an existing vehicle, showing an acceptable accuracy to size a race car braking system and for a refined assessment of the global vehicle performance on the driving simulator.