Torque steer is an effect of something being uneven/unequal. Whether it be the driveshaft length, tyre's or tyre pressures, suspension etc. But probably the biggest cause is an uneven road surface. Which is why I find it miffing as to why all examples are being swiped aside because on a perfectly flat surface the cars are not torque steering. In the real world you don't get perfectly flat road surfaces, least not on a public road. In GT6 your cars don't have issues with uneven suspension geometry or uneven tyre pressures and the physics model does not simulate tyre deformation (most sims don't). So if you're on a perfectly even surface with a sim that does not simulate tyre deformation, that is why you aren't getting torque steer at Route X, while you do on other circuits. As I've said, my own car only torque steers on noticeably uneven surfaces. Atleast only to the point where I can notice it.