Tire Meanings
In the tire size LT33/1250R20 what does LT stand for?
What is Light Truck
The area of the mounted tire which sits against the wheel
what is a Tire bead
8-13 letters/ numbers located on the inside sidewall near the rim.
what is the DOT
Pounds per Square Inch
what is PSI
The distance from the centerline of the wheel to the mounting face of the wheel.
what is the Offset
275/60R17 E what does E stand for
what is Ply rating
Excessive flexing and rapid wear of the tread shoulders
What is Under inflation
Amount of load that a tire can carry at a given inflation pressure
What is the carrying Capacity
A tire sizing system using the section width in mm, aspect ratio, type of tire construction, rim diameter in inches, load index and speed symbol
what is the P metric system
Threaded fasteners semi-permanently mounted directly to the vehicle hub that hold on the wheels.
What are Wheel Studs
Tires with this identification provide improved snow performance over tires meeting the existing RMA/RAC all-season tire definition
What is Mountain snowflake
A numerical code associated with the maximum load a tire can carry at the speed indicated by its Speed Symbol
What is Load Index
The distance from the sidewall to sidewall
What is section width
The distance from the tread surface to the bottom of the grooves.
what is tread depth
The hole in the center of the wheel that attaches directly to the hub of the vehicle
What is the center bore
made of rubber compounds and it is the part of a tire that makes contact with the road.
What is the Tread
have a tread pattern designed to rotate in only one direction
What is directional
The distance from the bottom of the bead to the top of the tread.
what is section height
A raised area in the tread grooves which becomes even with the tread surface when the tire is worn to 2/32’’ tread depth
what are tread wear indicators
fills the gap between the wheel's center bore and the vehicle hub for vehicles that are lug-centric
what are Hub rings
marking embossed on the sidewall indicating which car manufacturer a tyre has been designed for.
Raised rubber segments that make contact with the road surface
What are tread Blocks
Small, narrow slots molded into the ribs of the tread design which increase the traction
what are sipes
The inflations of a tire above the recommended pressure equaling to a rough ride, damage to the tire, and suspension strain.
what is over inflation
he number of lug holes in a wheel and the distance between them
What is the Bolt pattern