Looking for something specific? Check out these posts featuring 'Tire Size.'
Compact and full-size cargo/passenger vans are typically based on global chassis originally developed in Europe and imported into the United States. Examples include the Nissan NV200, Ram Promaster and Ford Transit. Many of the Original Equipment (O.E.) tires fitted to these vans are...
Often simply called a Tire Placard, light vehicles with a gross vehicle weight rating (GVWR) of 10,000 pounds or less (except motorcycles) are required to have a Tire and Loading Information placard. Commonly found on the driver's doorjamb, these placards are a consistent reference that...
For handling-oriented track & competition fitments, Tire Rack recommends mounting tires on the widest rim width approved by the tire manufacturer (and permitted by competition class rules). However, we also recognize that rules for stock, spec, or other autocross/racing classes often...
Revolutions Per Mile Revolutions per mile indicates the number of times a tire revolves while it covers the distance of one mile. Depending on the tire manufacturer, revolutions per mile may be either measured in a laboratory or derived from calculations based on their previous test...
Overall Diameter A tire's overall diameter is the outer diameter of the tire measured in the center of the tread. This measurement is made without any load placed upon the tire and after the tire has been properly mounted on its industry assigned measuring rim and has been inflated and reset...
Tread Width Measuring Tread width is typically thought of as a measurement between the outboard and inboard edges of a new tire's tread design. Ideally it approximates the width of the tread that comes into contact with the road. Unfortunately measuring tire tread width isn't as simple as...
Section Width A tire's section width (also called "cross section width") is the measurement of the tire's width from its inner sidewall to its outer sidewall (excluding any protective ribs, decorations or raised letters) at the widest point. This measurement is made without any load placed...
Measuring Rim Width The measuring rim width is the industry standardized rim width upon which the tire must be mounted in order to confirm it meets its dimensional targets. Because the width of the rim will influence the width of the tire, a standard rim width for every tire size is assigned...
Much like your foot can sometimes fit in a half size up or down shoe, tires have a range of rim widths they can be mounted on while still performing as designed. Likewise, similarly to how a person typically knows their "shoe size," tires have a measuring rim width from which the tire’s...
Tread Depth 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...
Maximum Load A tire's maximum load is the most weight the tire is designed to carry. Since a tire's load carrying capacity is related to the tire's size and construction and how much inflation pressure is actually used, maximum loads are rated with the tire inflated to an industry assigned...
When it comes to selecting replacement tires for a van, pickup truck, crossover and SUV, the most important consideration is to maintain sufficient load carrying capacity. Three tire-sizing systems are used on the Original Equipment (O.E.) tires fitted to today's light trucks, Euro-metric,...
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