As stated above, I created a skin here with simple means, please remember, I'm not a professional at all, I've only worked with Paint.net and I think my first job is quite good, everyone starts small.
Simply put the skin in the Skins folder under Assetto Corsa \ content \ cars \ urd_bayro_gt3 \ skins \
Have fun and good day
P.s i added a BMW Logo to the Steering wheel
