@LuckyNico92 stick the stickiest bubble gum you can on the L2/LT trigger.
Seriously though, all this apparent effort you put on writing your long posts and on looking up for shortcuts is completely at odds with your intransigent refusal to at least try to learn trail braking - unless this is just one more of those cases of glib hyperbolic language you so often resort to.
Trail braking is hard to master, but even a modicum attempt at it is better than just smashing the brakes and hope for the ABS to perform a miracle.
These are formula cars, their phenomenal grip comes from their downforce generation, and downforce increases AND decreases with the square of the car's speed. Meaning your grip budget goes from G8 top global economy to backwater village pretty quickly.
The upgrades improve on the brakes by making them more powerful and efficient - more stopping power, thus reducing the time of application.
If you truly do not even try to apply trail braking, this is you handicapping your own performance, not the game. Makes no sense to deflect the blame here.
Now we all know that a maxed out career car is far from balanced in this game. That said, it would just exacerbate the underlying issue of not braking properly.