Car tires are one of the items that ensure the safety and comfort of driving. You could say the tires are at the forefront in exploring the vehicle. Face to face with extreme road conditions.
The tire manufacturers increasingly compete to produce a tire that has good quality and high technology in order to adapt to road conditions fierce as any.
Besides tire construction is designed to withstand the load balanced so that when the vehicle accelerated rapidly in slippery road, vehicle still comfortable and do not slip.
In terms of tire construction can be distinguished by Carcass, namely regular and radial tires. Regular tires (standard) is composed of layers of thread that makes an angle of 30 to 40 degrees from the center line so that the tire can withstand wheel.
Function load conditions and transverse stretching. When receiving the vertical load, move yarn layer curve. That is why the ability to turn and wear resistance is less than radial tires.
The process of making radial tires use a variety of raw materials, dyes, chemicals, 30 kinds of rubber, steel wool, and so on.
The process begins with the mixing of natural rubber, oil, carbon materials, pigments, anti-oxidants, accelerators and other chemicals, which produce a substance called compound.
Mixture of these ingredients are mixed in giant blenders called Wheelbury machines in temperature and very high pressure. Mixture of black, mushy and heat processed in a giant blender repeatedly.
The composition of the rubber material to create a material, for example in the code 195/70R14 tire weighs about 8 kg consisting Daria, Â: 2 kg are 30 types of synthetic rubber, 1.5 kg of 8 types of natural rubber, 2 kg are 8 types of materials carbon black, steel wire belts 0.5 kg, 0.5 kg of polyester and nylon, steel wire bead 0.5 kg, 1.5 kg of 40 kinds of chemicals, oil and others.
Mixed common among synthetic rubber and natural rubber by tire type a, Â: Passenger Car Tires (in percent) 55-45, 50-50 small truck tires, car tires racing 65-35, off road tire (giant / Earthmover) 20 -80.
Standard tire specification code is based on the International Standardization Organization system, such as code 195/70R14 86 H. The figure 195 indicates the tire width in inches or millimeters on regular tires on radial tires.
Then H means the maximum speed allowed when using this tire. Code 14 is the rim diameter in inches, 70 is a high-aspect ratio tire width in percent, R is the type of tires and 86 show the load carrying capacity or load index. The maximum speed limit is expressed with different letters.
Code K maximum speed of 110 km / h.
L 120 km / h,
M 130 km / h,
N 140 km / h,
P 150 km / h,
Q 160 km / h.
Next code R to 170 km / h,
S 180 km / h,
T 190 km / h,
U 200 km / h,
H 210 km / h
V more than 210 km / h.
Make the car drivers use quality tires is very important of course. Many factors must be considered in tire-related driver safety factor, generally is standardization tire pressure, load and the maximum speed that can be covered tires.
For that each tire must be contained in the form of code of numbers and letters, this code means that the identity or character of the tire.
Therefore, it is better if you want to replace SO mania favorite car tire recognize the code found on the tire. It is very important to avoid the risk of accidents caused by tire blowout and will also help to get the character tires that can fit the needs of the car.
Here are his tips:
1. Tire Size Code example 185/55 R15 85V, this code means:
- 185 = Information tire width (mm size)
- 55 = Information Profile Tires, measured by the ratio (ratio) between the width by the height of the tire
- R = Indicates this is a Radial tire construction
- 15 = Indicates Wheel Diameter Size (inch units)
- 82 = Load Index (Maximum Load Code)
3. Maximum Pressure Eg 300 Kpa (44 Psi) Mas Press Code is information on tire pressure standards specified by the manufacturer.
4. Production Code For example there are Code 2707, number 2 digits indicate the year of production behind it is the year 2007, while the second digit from the front it shows the tire production week.
The production code is very important to know in advance, because the tire is able to show its age. So, even if a tire is new (not used) but when he was already old then elasticity will be reduced, thereby reducing its durability.
Can be quickly broken tire. 3 years is the maximum age for the tires can still be used; does not matter how good condition.
5. Rotation The code that indicates the direction rotation / tire rotation for installation. However, not all tires have this code.
6. Manufactured Indicate the brand and where the tire was made.
7. Plies Indicates the tire construction and materials used.
8. Tubeless / Tube Type Information types are tubeless tires (No Wheel In), while the mean tires Tube Type is the type that needs tires.
9. Tread indicator This code is to show the limit of the tire tread wear is recommended, usually marked with a triangle.
10. Tire Grade Determined based on the Uniform Tire Quality Grading System, There are three determining factors:
- Tread wear: The greater the value, showing character hard compound tires, which means a longer shelf life as well, because it is not easy to fast tread wear. Conversely, if tread wear is small, meaning soft compound tire character, usually tires like this are made for the use of racing and high speeds, but faster tread wear.
- Traction: traction tire indicator
- Temperature: temperature capability indicator / tire temperature
How to Read Tire Codes Best
Is a spare tire of a motor vehicle (2 wheels or 4 wheels) that has a specific function and is critical in determining the role of safety in driving. In relation to the function of the tire on the vehicle is very important, it is necessary to know how to read the tire code, how to use and care better tires to not only obtain safety benefits, but also benefits the economy, the benefits of convenience, and so on. On this occasion I would like to share about How to Read a Tire Codes Best for you to know.
In reading the code tires are still many people who do not know meaning of numbers and letters that are printed on the tire.
How to Read Codes For Best Tires there are 2 that I will discuss is How to Read a Motorcycle Tire Codes and How to Read Car Tire Code. okay we just start reading the code determines how the tire.
How to Read a Motorcycle Tire Codes
In motorcycle tires there is a code in the form of (Symbol) numbers or letters for example 130/90-16 67H or 4.60 H-18-4PR. Code of tire What information can we get? Below we will discuss some of them. There are 2 types of tires commonly used codes: That Code Wheel Imperial and Metric Codes.
Example:
Code Wheel Imperial 4.60-H-18 4PR 1. 4.60 states the tire width code "in units of inches" 2. H indicates the speed limit usage 3. 18 shows the code for the diameter of the wheel / rim "in units (") inches " 4.
4PR shows the code for the tire force based on the strength fiber fabric or tire ply rating, 4PR also means the use of layers of fabric made of nylon in the carcass indicated a strength equivalent to 4 layers of fabric tire. To Wheel Imperial Code, Aspect Ratio or the ratio of height to width tire tires based on the value of 100% (tire height equal to the width of the tire).
Example:
- Metric Tire Code 120/70-17 67H120 shows the code for the tire width "in millimeters"
- 70 indicates the tire code height to width ratio of the tire. 70 also means a high ratio of tire width 90% of the actual. If the tire width 120 mm, the height of the tire is 70% x 120 mm or = 85.2 mm. Small aspect ratio of a tire will improve vehicle stability and handling.
- 17 indicates the diameter code rims / rim in units (") inches.
- 67 shows the code for an allowed maximum load of (load index / LI). LI 67 means the maximum load that can be borne by a tire was 307 kg.
- Q is the code for maximum speed = 160 km / h.
- S is the code for maximum speed = 180 km / h.
- T is the code for maximum speed = 190 km / h.
- U is the code for maximum speed = 200 km.jam.
- H is the code for maximum speed = 210 km / h.
- V is the code for maximum speed = 240 km / h.
- W is the code for maximum speed = 270 km / h.
- Y is the code for maximum speed = 300 km / h.
- Z is the code for the above speed = 240 km / h.
How to Read Car Tire Codes
Many many people who do not know that the important thing is the code of a Wheel Wheel said produce time. Wheel will expire (expired) within a period of three years (3 years) after the tire was manufactured. So to read a car tire codes are as follows:
Production code is printed bi-section tire (tire side) see in the picture, with a unique design. Each tire manufacturer has its own digit code number for the tire marks of their products, there are 5 digits, some are 7 digits.
But the 4 digit code from the back is an international standard that shows off the production on Sunday (Week) and year (YEAR) tires are manufactured.
To know the code of the tire we can read it. For example, the X2001. The code number is informed tire production period. The first two digit code indicates week, last two digit code that means the year of manufacture.
Thus, when read, the code means, Wheel made in the 20th week of 2001. The code number on the tire is important, because the longer the tires are produced are stored, the more susceptible to damage also causes the violence in the tire compound.
Feel compound tires greatly affect the ability of the tire grip on the road is when braking. Compound that has aged hard or long can cause the tire is not always perfect and this means it will be fatal to the driver and vehicle.
To check manually we can do to check the hardness of compound can use tapping compound tire with the nail, if there is hollow at the compound means that the tire is practically feasible to use.
Tips for you:
Before we buy or replace a new tire, should we need to know what size and type of tires that should be used, eg the best tires in Indonesia GT Radial. The goal is that we are not wrong in choosing and buying Wheel Best. There are three elements that we need to know before buying the best tires:
1. Tire Size
If If we consider, on the outside of the tire 175/70R13 82H writing code. it means is:
- "175" indicates the tire tread width code using millimeters, so it's not the tire diameter. The larger the code number, then the increasingly wide sole.
- "70" code indicates the tire height in units of% per cent of the tire treads. Easy, is high you can look from the lip rim to tread glued to the asphalt surface. Thus, the smaller the number, such as 50, then the distance tread closer to the rim lip.
- "R" indicates radial tire construction codes.
- "13" is the diameter of the rim code accordingly. Means, used rim size of 13 inches.
- "82" represents the maximum load of code that can be supported per tire. The figure has a load index of 475 kg. The larger, the maximum load also increased. And vice versa.
- "H" represents the code limits the maximum speed achieved this tire. Code H is the maximum speed of the tire may penetrate up to 210 km / h.
As in the case of food products, Wheel also had expired. The default is 3 years from date of manufacture or a distance of approximately 60,000 km. Each tire manufacturer has the encoding as well as the number of different digits. It tires you can find a lip (near the wheel) such as 1709, meaning manufactured week 17 of 2009.
3. Tread wear Indicator
Tread wear Indicator is a sign or a physical characteristic that is located right between the two sides of the tire flower. Reinforced with thick lines that cross between the two sides of the tire that indicate the condition of the use of the tire. If the thickness of the tire touches the line, it indicates Tires must be replaced. The danger is when the tires are not replaced when the rain will cause symptoms of aquaplaning (floating tires), this would be very dangerous for your safety or the driver.
Probably most of us only know the size of tire from the rim diameter only. Let's take the example of alloy wheels 15 'tires size 15 "only. What about the other codes such as 185/55 R15 95H (size car Honda Jazz VTEC), continued at the end there is a small number: 4109 (what is this anyway?) And follow the tire transverse blue / red.
Let's peel one by one.
185/55 R15 95H
185 it shows the tire tread width (in millimeters).
55 is the tire height in units of percent of the tire tread. The lower it is, then it will be even thinner profile tires (rim lips closer to the asphalt surface).
R indicates that the tire is a radial construction. Radial explanation:
For radial tire cord carcass construction form a 90 degree angle to the circumference of the tire rim.
So, viewed from the side cord construction is in the radial direction towards the center or crown of the tire. Part of the tire is directly related to the road surface strengthened by such harness called "Breaker" or "Belt".
This type tires only suffered little deformation in the form of centrifugal force, even at high speeds. Radial tires also have a "Rolling Resistance" small.
15 is the diameter of the wheels, so the wheels are in use is the size of 15 '.
95 is the maximum load that can be transported by conveyor. (See table)
H is the maximum speed limit. (See table)
Speed Code P -> 150 km / jm
Q -> 160 km/h
R -> 170 km/h
S -> 180 km/h
T -> 190 km/h
H -> 210 km/h
V -> 240 km/h
W -> 270 km/h
Y -> above 300 km/h
Haulage 62 -> 265 kg
63 -> 272 kg
64 -> 280 kg
66 -> 300 kg
68 -> 315 kg
70 -> 335 kg
73 -> 365 kg
75 -> 387 kg
80-89 -> 450-580 kg
90-100 -> 600-800 kg
And what about the number 4109?
This is the time when the tire is in production.
41 shows Week 41 (1 year there are 52 weeks)
09 is the Year 2009
In other words, the tire is in production in week 41 of 2009.
Longest tire life is 3 years. More than that, the rubber tires will be vulnerable and style "bite" it will automatically be reduced.
So if there are people who say "Wheel these blossoms are still in the" not necessarily the tire is suitable to be used before we see its production date.
Finally, what about the colored lines circling around tire? This line is an indicator of the use of the tire. If the thickness of the tire, especially on the grove was touching the line, signaling must be replaced. If not replaced, in the rain and the vehicle sped out myself consequences.
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