So you have classic stock cars running on Transam tires, or classic F1s running on modern tires because there was no tire ever created purposely for them, and what modders have to do is start fiddling around with parameters that reduce grip or change characteristics in a manner that nobody has a clue how it works.
In the end what you have is many mods shod with tires that were never ever developed for those cars, so they might lack grip or have excess of it, or be radial instead of bias ply, etc, etc. So modders are limited in general to whatever existing tires Studio397 has released, which get copied over and over to the new mods. RF2 has a wonderful and well advanced tire model in real time 3D, but the problem is that nobody except the developers and payware contents creators (Not even all of them) have a fucking clue about it or can make new custom tires for mods. Wilks knows much more about AC than most of us, but I can say some things about rF2 from my modder's perspective.
