Jersey Tom wrote:
It's a pretty blanket statement he makes for sure, but there's some truth to it. Regardless of platform I'd think you would want some precision on entry of high speed corners... wouldn't be bad to have some power-on understeer (either with FWD or RWD) in that case, rather than smashing the brakes on turn-in for a hairpin when you really want some rotation.
Trail braking is not the same as 'smashing the brakes'.
Trail braking relies on the driver being able to modulates the brakes such that the longitudinal braking force gradually decreases, as the lateral forces increase. Therefore at max longitudinal force, lateral force is zero and vice versa.
This means that the trail braking technique requires a driver to smoothly bleed pressure of the brakes while turning the steering wheel.
Neither does train braking imply understeer of any form, if the brake balance is set correctly. With proper brake biasing, as the tyres would be at their limit simultaneously, so no under or oversteer would occur if the driver is smooth and precise. In fact, if the brake bias is to far aft, then there would be oversteer due to tyre slip angles at the rear exceeding those at the front