Traction for braking and acceleration will decrease due to the smaller contact patch while the wheels are straight. Cars with negative camber will also tend to tramline and wander by following cambers and grooves in the road surface, which reduces high speed stability.
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Is positive camber OK?
' Positive camber is for stability, while negative camber is common in high performance vehicles that require better cornering. Quick fact: While some positive or negative camber is good, too much of either is bad.
This is the angle of the wheel and tyre assembly relative to the vertical and, at a standstill, the front camber angle is usually around 3.5 degrees from vertical with the rear set at between zero and one degree.4 jul 2013
Bump Steer: Bump steer occurs when a vehicle is traveling down the road in a straight line, hits a bump, and now pulls to one side. It happens because one of the front tie rods is now higher than the other. This is usually caused by a worn or loose idler or pitman arm in a parallelogram steering system.
The purpose of this is to provide a degree of self-centering for the steering—the wheel casters around in order to trail behind the axis of steering. This makes a vehicle easier to control and improves its directional stability (reducing its tendency to wander).
Generally the rule of thumb is that more toe-in increases understeer and more toe-out increases oversteer. However, with modern cars, especially race cars with independent front and rear suspensions, there is another effect on handling.