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How to
read a tire
Speed
rating
Load index
Construction of tire
Francais
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HOW TO READ A TIRE?
XOXOXOXO 185 / 70 HR14
- XOXOXOXO :
manufacturer
- MVX : Tire
type .
- 185 : Size (185 mm)
- 70 : series ( relationship
of height to width inside the tire= 0,70).
- R :
Radial.
- 14 :
Interior Diameter (14 pouces).
- 88 : Load
index . 88 = 560 kg.
- H : Speed symbol (H = 210 km/h maximum).
- X :Model.
- Version:
Tubeless .
- Ñ : Tread Life
CONSTRUCTION OF TIRE
Ply: A
rubber-coated layer of fabric containing cords that run parallel to each
other; extends from bead to bead and goes between the innerliner and belts or
tread.
Bead: A round
hoop of steel wires, wrapped or reinforced by ply cords, that is shaped to fit
the rim; holds the tire onto the rim.
Belt: A
rubber-coated layer of cords that is located between the plies and the tread.
Cords may be made from steel, fiberglass, rayon, nylon, polyester or other
fabrics.
Carcass: The tire body
beneath the tread and sidewalls; also called casing.
Cord: The
strands of fabric forming the plies or layers of the tire. Cords may be made
from fiberglass, rayon, nylon, polyester or steel.
Groove: The space
between two adjacent tread ribs; also called tread grooves.
Rim: A metal support for a tubeless tire or a tire and tube assembly upon
which the tire beads are seated.
Shoulder: The area
of a tire where the tread and sidewall meet.
Sipes: Special
slits within a tread that increase wet and snow traction.
Tire: A precisely engineered assembly of rubber, chemicals, fabric and metal
designed to provide traction, cushion road shock and carry a load under
varying conditions.
Tire Placard: A metal or paper tag permanently affixed to a vehicle
which indicates the appropriate tire size and inflation pressures for the
vehicle.
Tread: That portion of a tire that comes into contact with the road. It is
distinguished by the design of its ribs and grooves.
Tread Rib: The tread section that runs around the circumference of
the tire, separated by the tread grooves.
Treadwear Indicator: Narrow bands, sometimes called "wear bars,"
that appear across the tread of the tire when only 2/32 inch of tread
remains.
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An alphabetical code (A-Z) assigned to a tire indicating the range of speeds at which the tire can carry a
load under specified service conditions.
Decoding of most frequently used speed ratings is given below.
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The sides of tires contain a wealth of information
about the performance characteristics of the tire. So there you can find load
index which is an assigned number ranging from 0 to 279 that corresponds to
the load carrying capacity of a tire.
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