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This is the thing if you search the forum I have posted many many many times about this.Really? That is interesting re. the BB. Yes I run it at the back so I can rotate but never though of it the way you lay it out. TC1 and 2 are very different, I qualify with TC1 but in race, on RM, I struggle not to turn her around exiting turn 2, 4 and 5. I might practice though as I am unlikely to qualify faster so will have 5 mins between races.
Brake bias is a tool, but for ultimate or even just consistent times you want all the braking concentrated to the front, loads of engineering reasons why there are big brakes at the front and smaller ones at the back, this is true of most race cars as well.
It’s why the front end geometry is designed to dig and turn, it just can’t do full brake and full turn at the same time. This is why having BB to the front gives you more direct adjustability. Trail braking feels more natural as the car will start to turn sharper, mid corner adjustment is easier as you can put grip on the turning wheels more directly.
This whole running bias to the back thing is weird, maybe it’s a GT7 thing but typically you move braking to the back for flatter geometry, the front brakes and wheel still do all the work it’s about corner entry pre turn profile of the car to keep it flatter. But where you can you’d typically want to run the majority of your braking to the front…the same as a motorbike…
Edit: for motorbikes you typically use the rear brake for stability, what you don’t use it for is cornering, especially turn in, more for exit angle adjustment or stability. But mostly never, you use the big front brake and suspension and you feed it in compressing the front end, adding angle (rotation) and you let the rear grip unloaded and fire out. It’s the same with Gr3 and 2 cars
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