Wheels and Tyres
What is the minimum tyre tread depth by law?
1.6mm
What is the component that is checked for wear by moving the steering wheel side to side?
Track rod end.
This is a system designed to stop cars skidding?
ABS.
What gives Toe out on turns (TOOTS)?
Ackerman Principle.
What suspension system component prevents the coil spring from compressing too far?
Bump stop.
What is the other name for profile?
Aspect Ratio.
What is the name of the adjustable part between the track rod end and the steering rack?
Track rod / Steering arm / Drop arm.
What is the name of the unfortunate property of bake fluid?
Hygroscopic.
What would one wheel toeing out too much cause?
Pulling.
What is the main purpose of suspension dampers?
Absorbing shocks.
With a tyre size of 225/45/R/15, what does the R stand for?
Radial.
What is the most common type of steering rack?
Rack and pinion.
What is the name for the action that drum brakes perform?
Self servo / self energising / wrapping.
What is castor for?
Bringing wheels back straight.
Which is meant by the term ‘suspension compliance’?
Give / free play.
How is a speed rating represented on a tyre?
A letter.
What is the name of the part between the steering rack and the steering wheel?
Steering column.
What component pushes the brake shoes?
Wheel cylinder / slave cylinder.
What is Ackermans principle?
One wheel turning in a tighter circle than the other.
What is a basic test to assess the condition shock absorbers?
Bounce test.
What is the name for the marking that represents a tyres age?
DOT code.
What is the safety feature of modern steering columns?
Collapsable.
How is a servo vacuum supplied on a diesel engine?
Vacuum pump.
Toe is ok, castor is ok, you have scrubbed outer edges, what is the fault?
Excessive positive camber.
What suspension is a Macphearson strut used with?
Independant.