Originally Posted by: opencamswrx 
Well - it shouldn't happen when I'm just tapping the brakes and have them compressed to just 15-20% ?
Forza physics just overreact to everything. They seem to operate on largely binary principles. Car physics have a general rule, like only brake in a straight line, get all your braking done before you get to the corner, don't lift off during fast corners. That kind of stuff. But clearly when you need to go fast, you're going to be braking under all kinds of conditions: straight, trail braking, left foot braking, etc. You use brakes and throttle position to balance the car, so the general rules still apply but there's wide grey areas either side that actual physics takes care of, and that area is where really good driving takes place. But Forza doesn't behave like that, so if you do any of this stuff like you would in a real car, the physics will punish you, even if it's entirely appropriate for how the track is driven in real life. And that's just because Forza overreacts to everything. In terms of racing physics, it's a blunt instrument.
It's fun once you get used to it, but you have to drive the majority of cars in a very specific way that you couldn't get away with in real life or actual sim games. And I say the majority because even though there's a lot of cars, the blanket rule about the way cars with different engine-drivetrain layouts behave is applied to a lot of them, with very specific exceptions. If my car behaved (or sounded) the way the stock car behaves in Forza, I never would have bought it: that's because the actual way it's driven just feels like a carbon copy of a bunch of other cars, even though it's not true to its actual behaviour on the track.