Dirt-rally -

Experienced players often "report" on their tuning setups. For example, suspension reports recommend Firm settings for smooth terrain (Tarmac) and Loose settings for rough terrain (Heavy Gravel/Snow). 3. Agile Management (Rally Software)

To track and report on your actual driving times and vehicle performance: dirt-rally

If your query refers to the software rather than the racing game: DiRT Rally - manual - Feral Interactive Experienced players often "report" on their tuning setups