The direction and angle at which the wheels & tyres are set are both important. Wheel alignment or ‘tracking’ involves checking the direction and angle against vehicle manufacturers’ specifications. These are most often referred to as toe in, toe out, positive camber or negative camber.
“Toe” refers to the direction the front of the tyres are pointing, “Toe-in” means they point towards the centre of the vehicle, “Toe-out” towards the outside. Different types of vehicles have different toe settings to allow for the way that wheels pull either towards each other or apart.
It’s worth keeping an eye out for unusual wear on your tyres, such as premature wear on the inside or outside shoulder, which could be caused by an incorrect camber setting.