rFactor

rFactor is a PC racing sim built around flexible vehicle modeling—it handles street cars, open-wheel racers, and anything with four wheels across different eras. The physics engine uses 15 degrees of freedom to calculate movement, paired with detailed tire modeling and aerodynamic simulation that account for downforce, drag, and airflow disruption. You're setting up suspension geometry, tire pressures, and wing angles rather than picking arcade assists. Races unfold based on grip limits and weight transfer, not rubberbanding. It's moddable by design, letting communities add tracks and car classes. If you want racing that prioritizes vehicle behavior over spectacle, this delivers that focus without compromise.