Prizm L4-108 1.8L DOHC VIN 8 MFI (1998)
Alignment: Description and Operation
Caster Description
Caster is the tilting of the uppermost point of the steering axis either forward or backward (when viewed from the side of the vehicle). A backward tilt is
positive (+) and a forward tilt is negative (-). Caster influences directional control of the steering but does not affect the tire wear and is not adjustable on
this vehicle. Caster is affected by the vehicle height, therefore it is important to keep the body at its designed height. Overloading the vehicle or a weak
or sagging rear spring will affect caster. When the rear of the vehicle is lower than its designated trim height, the front suspension moves to a more
positive caster. If the rear of the vehicle is higher than its designated trim height, the front suspension moves to a less positive caster.
If there is too little positive caster, steering may be touchy at high speed and wheel returnability may be diminished when coming out of a turn. If one
wheel has more positive caster than the other, it will cause that wheel to pull toward the center of the vehicle. This condition will cause the vehicle to pull
or lead to the side with the least amount of positive caster.
