GTR24h

"GTR2 is a sports car racing simulator developed under license by Blimey for SimBin for the x86 PC and is a sequel to GTR. Since its release in September 2006, it has received widespread acclaim. The game simulates the 2003 and 2004 FIA GT Championship racing series.

GTR2 offers many different game modes - Championships, Single Races, Practice, 24hr Races, Time Trials and the Driving School. The Official Championships consist of the 2003 and 2004 FIA GT Championship series. However, unlike its predecessor, GTR2 offers smaller unlockable championships as well as the ability to create custom championships."

- GTR2 on Wikipedia

Sim (simulated) Racing is the collective term for computer software (i.e. a vehicle simulation game) that attempts to simulate accurately auto racing (a racing game), complete with real-world variables such as fuel usage, damage, tire wear and grip, and suspension settings. To be competitive in sim racing, a driver must understand all aspects of car handling that make real-world racing so difficult, such as threshold braking, how to maintain control of a car as the tires lose traction, and how properly to enter and exit a turn without sacrificing speed. It is this level of difficulty that distinguishes sim racing from "arcade" driving games where real-world variables are taken out of the equation and the principle objective is to create a sense of speed as opposed to a sense of realism.

- Sim racing on Wikipedia