Automobile. Wheels and Tyres Revision Flashcards
What causes tyre wear on inner and outer edges
Underinflation

What aids the removal and refitting of the tyre.
The space surrounding one of the wheels.
The housing inside the fender/wing
Wheel Well

Wheel well protector or cover.
Its primary purpose is to prevent sand, mud, rocks, liquids, and other road spray from being thrown into the air by the rotating tire
Wheel well liner

Tyre width in mm
Tyre pressure gauge

Tyre changing machine

Used to remove and replace tyres
Tread wear indicators

Used to show/indicate minimum tread depth
Tread depth gauge

Used to measure tread depth
Torque wrench

Tool for tightening nuts and bolts
Steel wheel

Most common and cheapest type of wheel
Static wheel balance
How to check stationary imbalance
Static wheel balancer

Machine to check stationary imbalance
Static and dynamic wheel balancing

Tyre & wheel balance methods

Static tyre imbalance effects

Dynamic tyre imbalance effects

Toe and Camber effects

How to rotate tyres
Spoke wheel

Most common type of wheel for classic cars
Speed rating

Space saver wheel

Used as temporary wheel upto 50 mph
Self sealing layer

Reduces rapid deflation of tyre when punctured
Rim diameter in inches

Radial ply

More common type of tyre construction
Cross ply / Bias tyre

Less common type of tyre construction
Radial and Croos ply

common types of tyre construction

Radial & croos ply tyres differences
Overinflation

Centre of tread worn out
Improper balance
o mechanical (shock absorbers, etc) problem

Patches of worn out tread
Feathering

Excessive toe in or toe out
Excessive camber angle

Caused by worn out or damaged suspension components
Dynamic wheel balance
Popular method to balance wheel and tyre

Directional tyre
Asymmetrical tyres

Can have two types of tread pattern on the same tyre
Aspect ratio

Calculated as a percentage of the trye width
Aquaplanning

When the tyre has no contact with the road
Alloy wheel

Lighter, allow good heat dissipation for brakes and reduce unsprung weight
Load index

Denotes max pay load for the tyre

Parts involved in wheel alignment

Wheel alignment angles