Talking about transmition, i still can access the game but i´ve spent my time with an excel (thanks to
Seveners lotus seven blog )
Transmition settings don´t seems so effective than in GT6 or 5 , we would need to test it with ghost replay records one above the other to be sure, but here is what you can do with a custom gearbox. Theroretically, you can set all gears above the max torque rpm and as far as possible in the power curve.
This is for a Hyundai genesis gr4 that have a relatively short powerband.
Stock gearbox : For race cars GR4 or 3 , it´s already an excelent gearbox setted for a high speed track.
View attachment 642303
Custom gearbox : you can use it only moving the top speed setting, but then you can have a very short or too long 1st gear that will make you loose some place at a standing start.
View attachment 642304
Optimized: then we would have first to set a final gear to reach the top speed of a specific track and set a good first gear to perform a good standing start.
View attachment 642305
EDIT: You can also check that the given speed result by gear ratio of the GTS panel is not very accurate.
By the numbers , if the speed of the standard Genesis Hyundai gearbox is
for 6th gear ratio 0,926 = 291 kmh
1st gear ratio 3,442 = 78 kmh not 73 kmh as indicated on the panel.
PD did wrong on this