We've been helping people find the right tires, wheels and performance parts since 1979. If you're looking for the best and most accurate information on all things tires, you've come to the right place.
A tire's most important job is to carry the load required of it, and the load range/ply rating branded on the tire's sidewall indicates how much load the tire is designed to carry (at a specific pressure). Whenever changing tire sizes or from one tire type to another, it's important to ensure...
A load index is an assigned numerical value that signifies a tire's maximum load carrying capacity. They're useful to help compare load carrying capacity of different-sized tires, and as you might expect, the higher the tire's load index number, the greater its load carrying capacity. Using the...
The ability of a four-wheel drive and all-wheel drive vehicles to divide the engine's horsepower between its four tires is especially useful on loose or slippery surfaces such as sand and dirt, as well as on wet, icy or snow-covered roads. However it's important to remember that in order to...
What happens to rubber balloons in the days after a party? The air pressure inside them escapes through the rubber and the balloons go flat. And while air also escapes through the rubber of tires for cars and trucks, today's more robust tubeless tire designs experience air pressure losses of...
While coins can be used to estimate tread depth, using a calibrated tire tread depth gauge is a far more precise way of knowing how much tread you have left, and when to start budgeting for a new set! In the U.S., tread depth gauges measure in inches, specifically in 32nds of an inch, while...
Maybe you've heard of the Uniform Tire Quality Grade (UTQG) Standards and you want to learn more, or maybe you've noticed the words "Treadwear," "Traction," and "Temperature" on the sidewall of your tires, and you're curious what they mean. Well, these often-misunderstood "grades" do provide...
Several vehicle manufacturer's owner's manuals recommend operating winter tires winter tires several psi (typically 3-5) higher than their recommended pressures for summer and all-season tires. While none of them actually provide the reason why, there are several scenarios that would support...
Most modern passenger car and light truck tires feature size designations that indicate the tire's dimensions in a combination of metric, mathematical and English systems. While this unusual combination of millimeters, percentages and inches is a byproduct of the evolution of global tire...
When it comes to determining the age of a tire, it is easy to identify when a tire was manufactured by reading its Tire Identification Number (often referred to as the tire's serial number). Unlike vehicle identification numbers (VINs) and the serial numbers used on many other consumer goods...
Many drivers have experienced the benefit of using winter tires in the colder months where pavement temperatures are lower and the threat of snow and ice are always just around the corner. While you may have answered "yes" to the question of "should I get winter tires", now you are faced with...
A warranty is a manufacturer's assurance of quality that defines the period of time that they will repair or replace products that show signs of defects due to materials or workmanship. While most consumer goods are backed for their first 30, 60 or 90 days of use or up to one year from the date...
Tire Return InstructionsThis is for those customers who need to return just tires. For returning Tire & Wheel Packages, see What Are The Instructions For Returning A Tire & Wheel Package? and Wheel Packaging Instructions. Note: You must have a Return Authorization Number to process your return....
Over the past several years, we have seen a large influx of all-season and all-terrain tires that are severe snow service-rated, and therefore branded with the three-peak mountain snowflake (3PMSF) symbol. This is a trend we expect to continue, with the three-peak mountain snowflake symbol...
Your tires support the weight of your vehicle, right? Well they don't! It's the air pressure inside them that actually supports the weight. Maintaining sufficient air pressure is required if your tires are to provide all of the handling, traction and durability of which they are capable....
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