Torque
Steer
Torque
steer is a phenomenon which adversely effects the handling
on front wheel drive cars with high torque motors. It is the
name given to the tendency for some front wheel drive cars
to pull to the left or right under hard acceleration. It is
a result of the offset between the point about which the wheel
steers (which falls at a point which is aligned with the points
at which the wheel is connected to the steering mechanisms)
and the centre of its contact patch. The tractive force acts
through the centre of the contact patch, and the offset of
the steering point means that a turning force about the axis
of steering is generated. In an ideal situation, the left
and right wheels would generate equal and opposite forces,
cancelling each other out, however in reality this is less
likely to happen. Torque Steer is often incorrectly attributed
to differing rates of twist along the lengths of unequal front
drive shafts or CV joints.
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