Best mods? Cars and tracks

[kamackeris]

What do you guys consider to be the best car mods? I would like a gt3 type mod but the ones I have tried (blancpain and fia gt3) have had messed up mirrors

Also what are the best tracks out there with good ai?

 

[Patrick Giranthon]

Xtremfactor

 

[Wesley Soares]

Xtremfactor

tnx!