GT4 Rebuilt: Physics, Tires, BoP & Real-World Correlation
The entire GT4 class just got its biggest rework since the cars arrived in iRacing. iRacing rebuilt the class around modern physics primitives, a fully updated tire model (dry and wet), and a rules/BoP pass that aligns the sim with today’s IMSA Michelin Pilot Challenge (IMPC). The result: higher top speeds, lower minimum corner speeds,…
