Tire Ageing how old is too old????

Last week 20-20 Abc did a story about the age of tires.
How old it too old.What exactly are consumers being sold as NEW how old are they actually. Not realizing all the data is not in on Tire Ageing.Many ,many factors such as where it was made how it was made ,how it was stored where it was stored. Not creating a panic in the motoring publics mind that somehow now after a hundred something years this Amazing product that is sold New,Used and Retreaded which are made with casings that are used tires somehow have an expiration date like milk.. then the question of tires in USE on the roadways what to do about them as well without excaerbating the tire recycling progress the industry has made in the last twenty years.
This is a question that has been raised by Sen De Wine from Ohio and is being pursued by Ralph Nader wanna be Sean for the safety research institute.Institute my ass.
Just another so called do gooder Would do a lot better not attacking an industry and trying to improve it with the help of the insiders.
No One wants to sell a dangerous product.The tire industry should come up with a standard.
Tires are an excellent tribute to engineering they not only have one life ,but many times have two or more.As a Used Tire or as A casing for rereading REUSE IS RECYLING


TIRE FACTS WHAT YOU SHOULD KNOW ABOUT THOSE LABELS ON YOUR NEW TIRES.

EXACTLY WHAT DO THOSE CODES,TEMPERATURE RATINGS,TRACTION,TREAD DEPTH WHAT IS IT ALL ABOUT. MADE SIMPLE FOR THE EDUCATED TIRE CONSUMER .

REMEMBER TIRE SAFETY STARTS WITH YOU PUMP" EM DO NOT THUMP" EM USE AN AIR GUAGE AND CHECK YOUR AIR PRESSURE REGULARLY.ALSO VISUALLY INSPECT THE TREAD AND SIDEWALL OF THE TIRE FOR ANY ABNORMALITIES. KEEPING YOUR TIRES PROPERLY INFLATED AND MAINTAINED
WILL SAVE YOU GAS AND MORE..CHECK YOUR DOOR JAMB FOR MANUFACTURERS SPECIFICATIONS AS WELL AS YOUR OWNER'S MANUAL AND THE TIRE SIDE WALL IF NOT OEM FOR INFLATION INSTRUCTIONS VISIT



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Tire Size Markings
The tire size shown below is P185/60R14 82H. The P represents the car type, Passenger. The 185 represents its section width (tire width in mm). The 60 is the tires Aspect Ratio (the ratio of the sidewall height to the tread width). The R represents radial tire construction. The 14 represents the rim/wheel size and 82H represents the load index and speed symbol.

Speed Ratings
Speed ratings are determined by indoor laboratory testing methods which measure high speed tire durability under controlled test conditions. These test procedures do not take into account underinflation, tire damage, vehicle characteristics, or road conditions which can lead to sudden tire failure or loss of vehicle control at much lower speeds than indicated by the tire's speed rating. The validity of using speed rated tires in the U.S. is based on the idea that the tire's top speed capability must at least equal the vehicle's top speed capability, since it cannot be assumed that the driver will always observe the speed limit.

Recently the speed rating is being referred to as the "performance rating" of the tire, since the higher speed rated tires generally offer improved handling and maneuverability compared to lower speed rated tires.

Load Index
Load index indicates the maximum load capacity each tire is designed to support. Like speed ratings, assume near perfect operating conditions to obtain the ratings listed in the table below.

Uniform Tire Quality Grading (UTQG)
Under UTQG, tires are graded by the manufacturers in three areas; treadwear, traction and temperature resistance.

* Treadwear
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear 1.5 times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, and may depart significantly from the norm due to variations in driving habits, vehicle condition, road characteristics, and climate.

* Traction
The traction grades from highest to lowest are AA, A, B and C. They represent a tire's ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked "C" may have poor traction performance.

* Temperature
The temperature grades are also A, B and C, representing the tire's resistance to heat generation and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life; excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger tires must meet under Federal safety laws.

Wheel Basics

* Wheel Width
Distance between inside of flanges rounded to nearest 1/2-inch. Ensure that wheel width is proper for tire size you intend to mount on it. All tire sizes have minimum and maximum wheel width limits. Correct wheel width is about 75% of tire cross section width.

* Wheel Diameter
Distance from bead seat to bead seat across diameter of wheel. Must be exactly the same as tire rim diameter. Mounting a tire of one diameter on a wheel of another diameter can result in violent explosion causing serious injury or even death. Always verify diameter stamped on the wheel and match the tire exactly.

* Wheel Offset
Distance between wheel mounting surface where bolted to hub of drum and centerline of rim. Determines vehicle "track" or distance between tires on each axle. Wheels with more negative offset than original wheels move outboard on car. Keep the wheel offsets as close to original as possible to avoid steering difficulties or wheel bearing fatigues. Negative offset on rear increases "track" and may improve stability and handling.

Ply Rating/Load Range
While there is no industry-wide definition of ply rating, truck tires are frequently marked with ply rating and equivalent Load Range. These markings are used to identify the load and inflation limits of that particular tire, when used in a specific type of service.



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