For decades, sim racing was built around a single obsession: reproducing the behaviour of a car as accurately as possible. A simulator’s quality was measured by its tyre model, its weight transfer, its suspension response, its aerodynamics and the fidelity of its force feedback. The more convincing the relationship between wheel, car and tarmac, the more prestige the product carried. That criterion still matters. It is no longer sufficient. In 2026, good physics are the starting point, not a complete value proposition. The leading simulators have reached such a high level of technical competence that the deepest differences are no longer found only in how a tyre gives up grip, but in everything surrounding the act of driving: progression, consequences, competition, interface, artificial intelligence and the sense of belonging to an ecosystem. The modern sim racer does not just want the car to behave believably. They need a reason to switch it on. Physics as the price of entry Technological progress has closed part of the distance that once separated the most advanced simulators from everything else. Specialist studios have long since mastered fixed time steps, force handling, inertia matrices, tyre deformation and the interaction between temperature, pressure and wear. This does not mean every title offers the same level of realism. Substantial differences remain in how each engine represents the limit of adhesion, aerodynamic balance, chassis torsion or the transition between dry and wet running. But for a large share of the audience, several reference products already deliver driving that is plausible, coherent and communicative enough. Beyond a certain threshold, physics improvements produce diminishing returns. A user can clearly feel when a car is artificial, unpredictable or excessively forgiving. Telling two advanced thermal degradation models apart, on the other hand, demands experience, specialised hardware and controlled test conditions, the