Glossary Of Tire And Loading Terminology - Volkswagen Eos Owner's Manual

WARNING
Using the wrong snow chains or installing snow chains improperly can cause accidents and
severe personal injuries.
Always use the proper snow chains.
Follow the installation instructions provided by the snow chain manufacturer.
Never exceed the permissible speed limit when driving with snow chains.
NOTICE
Remove snow chains when roads are free of snow. Otherwise, the chains can damage the
tires, impair vehicle handling and can be quickly worn down.
Snow chains can scratch or damage wheel rims if they have direct contact with the rims.
Volkswagen recommends using coated snow chains.

Glossary of tire and loading terminology

Please first read and note the introductory information and heed the WARNINGS
Accessory weight
The combined weight (in excess of those standard items which may be replaced) of automatic
transmission, electro-mechanical power steering, power brakes, power windows, power seats, radio,
and heater, to the extent that these items are available as factory-installed equipment (whether
installed or not).
Aspect ratio
The ratio of sidewall height to tire width, expressed as a percentage. A number of 70 (0.7:1 or 70%) or
lower indicates a low-profile tire with a shorter sidewall for improved steering response and better
overall handling on dry pavement.
Bead
The part of a tire made of steel wires, wrapped or reinforced by ply cords, with the shape and structure
to ensure proper fit to the wheel rim.
Bead separation
A breakdown of the bond between components in the bead.
Carcass
The tire structure, except tread and sidewall rubber which, when inflated, bears the load.
Chunking
The breaking away of pieces of the tread or sidewall.
Cord
The strands of material forming the plies in the tire.
Cord separation
The parting of cords from adjacent rubber compounds.
Cracking
Any parting within the tread, sidewall, or inner liner of the tire extending to cord material.