Michelin: Simulation is expected to make tire development greener and faster

In the development of tires for racing or production sports cars, the French tire manufacturer Michelin increasingly relies on simulation. At the 24 Hours of Le Mans 2023, for example, all prototypes competing in the top-tier Hypercar class will be equipped with tires that were fully developed using simulation software. This technology is an essential component of the relationships between Michelin and its automotive industry partners and plays an indispensable role in the development of high-performance tires for original equipment.

"The combination of mathematical modeling and simulators makes it possible to determine the tire sizes and technologies best suited to a new vehicle model based on its technical characteristics and weight distribution," the manufacturer promotes its approach.

This tool, based on data processing technology and advanced mathematical algorithms, aims to underscore the status of the French company as a technology leader and data-driven enterprise. It achieves increasingly efficient racing as well as general mobility, optimizing Michelin's work with its partners and vehicle manufacturers. At the same time, it is intended to reduce the ecological footprint of research and development and enable real savings compared to longer, traditional development cycles. A sustainability officer estimates that the development and production of prototypes alone would be responsible for up to 80 percent of the emissions and costs, which would be eliminated.

During our visit, a professional driver took a seat in the simulator and sequentially tested various tires with different compounds on a racetrack. He gave precise assessments of where he desired more grip and traction or more lateral guidance, providing direct feedback to the engineers for their development.

Three digital models interlock

Specifically, the technology reproduces dynamic reality through the interplay of three digital models. The first replicates the characteristics and grip properties of racetracks, the second the properties of the vehicle frame (or even the entire vehicle), and the third the behavior of the tires in all their details. At the wheel of a simulator, drivers can test different types of tires in an exceptionally wide range of configurations. In addition to the objective data from the simulator, the subjective impressions and feedback from the drivers are also recorded, which are then supposed to behave just as they would in a real car or on a real racetrack.

Building a bridge between the real and virtual worlds

As drivers adapt to this digital revolution, their role has evolved significantly, with younger drivers refining their racing skills while simultaneously acquiring simulator skills. Building a bridge between the real and virtual worlds has become a priority.