The TOYOTA stackers have a 5-point wheel configuration with the drive wheel in the centre. Thanks to the central placement of the drive wheel, the tiller arm is also centered.
Because of the central placement of the drive wheel, the machine does not pitch when the wheel regains its grip after spinning, e.g. on wet floors and ramps. With a drive wheel placed off-centre, considerable lateral movement can occur in these situations. The central placement of the tiller arm makes it easier for inexperienced operators to handle the truck and ensures optimum view to both sides.