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...
Tire rolling resistance is defined as the force required to maintain the forward movement of a loaded pneumatic tire in a straight line at a constant speed. And just like the laws of physics and forces of nature, it is an obstacle every vehicle has to overcome to transport passengers and cargo...
What Are All Those Lines, Numbers and Letters on a New Tire's Tread? While tires may appear to be a homogeneous piece of rubber after they are vulcanized during curing in their molds, most tires feature dozens of fabric, metallic and/or rubber components that must be shaped, sized and...
Federal law requires tire manufacturers to provide standardized information permanently branded on the sidewalls of all tires sold in the United States. This includes information about the tire's basic characteristics, capacities and construction, as well as its U.S. Department of...
While improvements in quality control during the development and manufacturing process work to reduce defects, the potential for a tire safety or workmanship recall continues to exist. In the event of a recall, tire manufacturers are obligated by law to notify owners. Tires Purchased Through...
Several vehicle manufacturer's owner's manuals recommend operating 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 the practice....
Significant changes in altitude affects tire pressures when traveling from one elevation to another. Fortunately, this influence is relatively small and can be easily accommodated. Atmospheric pressure is the force exerted on objects by the weight of the air molecules above them. While air...
The Tire Rack Street Survival teen driving schools authorized by the BMW CCA Foundation are intended to provide a controlled environment for young drivers to learn car control by experiencing their vehicles' handling and stopping capabilities. Street Survival driving courses are typically set...
January 19, 2007 Tires tested: Bridgestone Turanza EL400-02 Standard Touring All-Season P215/60R16 Bridgestone Blizzak WS60 Studless Ice & Snow 215/60R16 Since we have experienced that the performance of different tire models typically varies in the amount of responsiveness and...
While deep snow and ice-covered roads are two of the most challenging conditions North American drivers will face, tire developments during the last decade have noticeably advanced wintertime mobility. The technological revolution of dedicated winter tireswinter tires for drivers in the...
Tires used on the track have to work in a very tough environment: hard cornering, heavy braking, powerful acceleration, rubber grinding away against abrasive pavement lap after lap. To help you get the most from your tires, you should closely inspect them between every session as part of...
Visible Tread Splices While visible and open tread splices are conditions rarely seen on street tires, they appear more frequently on racing tires, including the DOT-legal competition tires often used for road racing, track days and autocrossing. A visible tread splice is cosmetic in nature...
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