There is no way to use an identic process or using a setting pattern or calculator in GT7. You can use it any theory but it was working only 70% to 80% .
If you take any car having the same power , torque , FR weight deistribution , same tires grip level , same downforce if have some ........ Considering that in GT a tuning part is a same tuning part for all , ( like racing suspension , Shock absorbers.....)
You'll never have the same behavior for this same cars parameters.
Because of this a specific setting is needed in GT7. About how they are working , you can check the guide "BEYOND THE APEX " in the upper menu. It's very well explained and all the settings in GT7 are working in the good way (this time).
Some are more sensitive than others.
Ride height is responsive
Springs also responsive.
Dampers Compression and extension are a few less responsive.
Camber setings is almost dead or moribund.
TOE angke is a few responsive.
LSD is very responsive
Downforce is very responsive.
To resume. Every car is a special car to set in GT. You need to spend time on it . More or less. Some cars are very tricky to set , i need a week for very very few , others need 15 minutes at least for me . After 15 year doing this , i don't think about how to do , no method , it's like a feeling.