Originally Posted by LethalOatmeal
I guess I could just try the new"team" tires
the GTM is already changed ?
As said above, the GTM-change is already content of the "TT-no-reset Patch". This is a stand-alone patch and doesn't make any other changes in cars, tracks or tires. Of course you can install all of the three patches and get a new, more realistic tiremodel, but not really necessary if you are happy with your game as it is.
If you wantt to make changes yourself, you first have to export the relevant file with BFZ-manager. Then you will find a folder inside your RT_install called "ExportedData". Inside you find, what you've extrated and can edit the files with a related editor, for example a texteditor like wordpad or a paintprogram, if you want to edit skins. After the edit is done, import the altered file back to the game, again with the BFZ-Manager.
Hope, that is helpful!