![]() A special version of rFactor was available for business application, for example for event simulators or promotion. ![]() A modified version of this engine was utilized by The Sim Factory for ARCA Sim Racing. The gMotor2 engine was also used in many Simbin games, including GT Legends, the GTR series and the Race series. The gMotor-engine2 on which the game is based is a direct successor to the engine used in previous titles developed by ISI, most notably F1 Challenge '99-'02, released through EA Sports. rFactor was developed by Image Space Incorporated (ISI), which has been developing simulators since the early 1990s for both commercial and military purposes. Released in November 2005, rFactor did not have much competition in this market however it featured many technical advances in tire modelling, complex aerodynamics and a 15 degrees of freedom physics engine. rFactor aimed to be the most accurate race simulator of its time. Although the tire modeling in rFactor is better when done by a competent modding group (see NAGT mod or Formula BMW), but is rare to find.Stock Car, GT, Touring,rFactor is a computer racing simulator, designed with the ability to run any type of four-wheeled vehicle from street cars to open wheel cars of any era. The most enjoyable to drive right out of the box would be GT Legends with GTR2 next. ![]() If I had pick a single tire model I like the most 'on paper' it would be LFS (they model tire flex at the least). Those "feelings" have little to nothing to do with the tire-model or the realism of the physics engine. What you guys are "feeling" is the fictional values in the Force Feedback programming which will vary wildly between sims, settings, and obviously wheels manufactures. Basically, none come anywhere near modeling a tire, let alone a tire under the strains and stresses of auto-racing. The most enjoyable to drive right out of the box would be GT Legends with GTR2 next. They do not model rubber elasticity, tread deformation, sidewall flex, friction, graining, etc. This is the same tire model that iRacing uses today (sorry guys, this is sad but fact) and models less than half with ISI does.Īll tire values in all games lack 90% of real-world tire values. ![]() NR4-2003 (same base physics as GPL) was released with some amount of tire modeling, though still no where near what ISI does in rFactor. GPL did not model tires at all, just blocks of 'stone' at the end of suspension pieces. rFactor is the next generation of that physics engine and more advanced, though in small steps. ISI licensed the use of that engine to Simbin to create GTR1, GTR2, RACE07, and all their addons. GTR1 and GTR2 are all built from the same ISI physics engine as the older EA Sports F1 games. ![]()
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