Tire Size

The following illustration shows an example of a typical passenger vehicle tire size.

(A)Passenger (P-Metric) Tire: The United States version of a metric tire sizing system. The letter P as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U.S. Tire and Rim Association.

(B)Tire Width: The three-digit number indicates the tire section width in millimeters from sidewall to sidewall.

(C)Aspect Ratio: A two-digit number that indicates the tire height-to-width measurements. For example, if the tire size aspect ratio is 60, as shown in item C of the illustration, it would mean that the tire’s sidewall is

60 percent as high as it is wide.

(D)Construction Code: A letter code is used to indicate the type of ply construction in the tire. The letter R means radial ply construction; the letter D means diagonal or bias ply construction; and the letter B means belted-bias ply construction.

(E)Rim Diameter: Diameter of the wheel in inches.

(F)Service Description: These characters represent the load range and speed rating of the tire. The load index represents the load carry capacity a tire is certified to carry. The load index can range from 1 to 279. The speed rating is the maximum speed a tire is certified

to carry a load. Speed ratings range from A to Z.

Tire Terminology and Definitions

Air Pressure: The amount of air inside the tire pressing outward on each square inch of the tire. Air pressure

is expressed in pounds per square inch (psi) or kiloPascal (kPa).

Accessory Weight: This means the combined weight of optional accessories. Some examples of optional accessories are, automatic transmission, power steering, power brakes, power windows, power seats, and air conditioning.

Aspect Ratio: The relationship of a tire’s height to its width.

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Chevrolet 2005 owner manual Tire Terminology and Definitions, Tire Size
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2005 specifications

The 2005 Chevrolet lineup presented a range of vehicles that were notable for their blend of performance, comfort, and advanced technology. One of the standout models was the Chevrolet Silverado, a full-size pickup truck that offered an impressive range of trims and configurations. With powerful V6 and V8 engine options, the Silverado was well-suited for both work and leisure. Its robust towing capacity and spacious cabin made it a favorite among truck enthusiasts who required utility without compromising on comfort.

Another highlight of 2005 was the Chevrolet Equinox, a mid-size crossover SUV that entered the market with a focus on practicality and versatility. With a spacious interior and flexible seating arrangements, the Equinox catered to families and active individuals alike. Its standard safety features, including anti-lock brakes and multiple airbags, underscored Chevrolet's commitment to passenger safety.

For those seeking a sportier option, the Chevrolet Corvette remained a symbol of American performance. The 2005 Corvette featured a sleek design and a powerful 6.0-liter V8 engine that delivered exhilarating acceleration. With its lightweight construction and advanced suspension system, the Corvette offered precision handling, making it a joy to drive on both the track and the open road. The interior was equally impressive, featuring high-quality materials and modern technology, including a premium sound system.

In terms of technology, Chevrolet was ahead of the curve in 2005. Many models came equipped with the OnStar system, providing features like navigation, emergency assistance, and stolen vehicle recovery. Additionally, the incorporation of advanced audio systems and Bluetooth connectivity options allowed drivers to stay connected while on the go.

Chevrolet also focused on fuel efficiency during this year, with several models featuring innovative engine designs and lightweight materials that improved overall gas mileage. The introduction of hybrid technology in certain models marked a step towards a more environmentally conscious lineup.

Overall, the 2005 Chevrolet models combined style, performance, and practicality, appealing to a broad audience of drivers. With a commitment to innovation and quality, Chevrolet solidified its status as a leader in the automotive industry during this era, paving the way for future advancements.
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