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...
Why do we change our tires and wheels? Aside from necessity, most of us do it for performance, comfort and style. But to be sure our tires are performing properly and that we're rolling comfortably and in style, we'll need to correctly install our new tires and wheels. Here's a few tips from us...
Proper wheel installation requires the wheel-attaching hardware (lug nuts or bolts) be tightened to the recommended torque specification for the vehicle make, model and year. Torque specifications are usually found in the vehicle's owner's manual.* Proper torque requires using the correct...
Revised European Union (EU) labeling regulations for passenger car, light commercial vehicle and heavy bus/truck tires went into effect May 1, 2021. These revised regulations update and will replace those originally introduced in 2012 to further harmonize the information available when...
White wall, outlined white letter and raised white letter tires all share a common manufacturing technique of adding a layer of white rubber on a stylized sidewall, strategically covered by a thin layer of non-staining black rubber to create the desired letter, stripe or effect. The...
Four-wheel drive and all-wheel drive vehicles are equipped with differentials and/or viscous couplings that are designed to allow momentary differences in wheel speeds when the vehicle turns a corner or temporarily spins a tire. However, if the differentials or viscous couplings are forced to...
The following notes are intended as a starting point for your Club Spec MX-5 (CSX) autocross set-up. On most dry, clean autocross surfaces these settings will result in moderate understeer to a neutral balance during steady state cornering and predictable behavior in fast transitions....
Care and Feeding of Falken Azenis RT660+ tiresThe Falken Azenis RT660+ is a balanced, easy-to-drive tire with a wide range of applications. The following guidelines will help drivers optimize their tires' performance during Club Spec MX-5 (CSX) autocross competition and serve as a baseline from...
The tire sizing used for DOT-legal competition and track day competition and track day tires share the same P-metric or Euro-metric tire sizing systems used for high-performance passenger car tires. However, tire size formats used for Non-DOT-legal circuit racing slicks and rally motorsports...
Advantages of Correct Tire InflationMaintaining correct tire inflation pressure helps optimize tire performance and fuel economy. Correct tire inflation pressure allows drivers to experience tire comfort, durability and performance designed to match the needs of their vehicles. Tire deflection...
While it is simple to place a Lincoln penny in the tread groove of a worn tire and use Abe's likeness as a guide, we don't think Honest Abe knows what's best for today's drivers. The Lincoln penny tread depth test has been touted for years to be a suitable method of determining when it's time...
While today's P-metric passenger tire sizes have existed since the early 1980s, restoring classic muscle cars and pony cars has kept yesterday's numeric and alpha numeric tires from disappearing. This chart has been developed to help you determine their equivalent Euro-metric and P-metric tire...
While most passenger car and truck tires follow a similar sizing convention, Light truck tires sometimes (especially in the larger off-road sizes) utilize flotation sizing, which can make comparing sizes somewhat less obvious. While the tire's spec page or tire size calculator will give...
Tire treadwear/mileage warranties have become a popular marketing tool used by most tire manufacturers (and some independent retailers) to help position some of their tires competitively in the marketplace and to help indicate their potential longevity to consumers. Today they range from 30,000...
Tread depth is a vertical measurement between the top of the tread rubber to the bottom of the tire's deepest grooves. In the United States, tread depth is measured in 32nds of an inch. Because it is difficult to accurately measure tread depth with a ruler, tread depth is best measured with a...
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