But those loads are balanced out between the front and rear so the impact is far less.

When I look at a ITS GSR and a ITA Integra RS, and I take into account the torque, the only increase in 'work' is under braking. Significantly higher straight line speeds should result in more work for those front tires.

The %'s I posted are a function of power and weight. Isn't that as close as we can reasonably get - or WANT TO TRY AND GET TO?