I need help please

[AyoubAlgamodi]

Hi i have a big problem with tuning cars , i do not know how to tune the car and set the best values to the parts
any advice tutorial to learn tuning cars

 

[Ameer67]

GT6 Tuning Guide 1.15.

(6,300th post on GTPlanet!)

 

[AyoubAlgamodi]

thanks @Ameer67