Base


P255/60R19 108H

(click for a tire code explanation)

P

Intended Use Of Tire

Passenger Vehicle. When a tire size begins with a P, it signifies the tire is a p-metric size that was designed to be fitted on vehicles that are primarily used as passenger vehicles. This includes cars, minivans, sport utility vehicles and light duty pickup trucks (typically 1/4- and 1/2-ton load capacity). The use of p-metric sizes began in the late 1970s and they are the most frequently used type of tire size today.

255 millimeters wide

Tire Width

Following the letter(s) that identify the type of vehicle and/or type of service for which the tire was designed, the three-digit numeric portion identifies the tire's section width/cross section in millimeters.

The 255 indicates that this tire is 255 millimeters across from the widest point when mounted and measured on a specified width wheel. Because many people think of measurements in inches, the 255mm can be converted to inches by dividing the width in millimeters by 25.4 (the number of millimeters per inch).

255mm / 25.4 = 10.04"

60%

Aspect Ratio

The ratio of the height of the tire's cross-section to it's width. 60 means that the height is equal to 60% of the tire's width.

Typically, following the three digits identifying the tire's width in millimeters is a two-digit number that identifies the tire's profile or aspect ratio.

The 60 indicates that this tire size's sidewall height (from rim to tread) is 50% of its width. The measurement is the tire's section height, and also referred to as the tire's series, profile or aspect ratio. The higher the number, the taller the sidewall. The lower the number, the lower the sidewall. We know that this tire size's section width is 255mm and that its section height is 50% of 255mm. By converting the 255mm to inches (255 / 25.4 = 10.04") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of 5.02".

R

Construction Method

Radial. The R in the P255/60R19 108H size identifies that the tire has a radial construction in which the tire's plies "radiate" out from the center of the wheel. Radial tires are by far the most popular type of tire today representing over 98% of all tires sold.

If the R in the size was replaced with a D (P255/60R19 108H), it would identify that the internal tire body plies crisscross on a diagonal and that the tire has a "bias ply" construction. Tires using this construction are for light truck and spare tire applications.

19" wheel

Rim Size

The 19 indicates the tire and wheel diameter designed to be matched together.

Tires that have a rim diameter expressed in inches (P255/60R19 108H, as well as 8, 10, 12, 13, 14,15, 17, 18, 19, 20, 22, 23, 24, 26 and 28) are called "inch rim" sizes. These are the most common types of tire sizes and are used on most cars, minivans, vans, sport utility vehicles and light duty light trucks.

Tires and wheels with unique rim diameters should never be combined with traditional "inch rim" tires and wheels.

Load Range/Ply Rating

This tire has a ply rating of which indicates how much load the tire is designed to carry at it's specified pressure.

108

Load Index/Service Description

2181lb load. The tire assigned numerical value used to compare relative load carrying capabilities.

The 108 represents the tire's service description. A service description identifies the tire's load index and speed rating. Service descriptions are required on all speed rated (except for Z-speed rated) tires manufactured since the early 1990s.

H

Speed Rating

210mph. The maximum speed that the tire can sustain for 10 minutes.

Today, the only tires that continue to include the speed rating "in" the tire size (P255/60R19 108H) are Z-speed rated tires. In this case, following the two digits used to identify the aspect ratio are the letters ZR to identify the tire's speed rating (Z) and its internal construction (R). Since 1991, all other speed ratings are identified in the tire's Service Description.

Base


P255/60R19 108S

(click for a tire code explanation)

P

Intended Use Of Tire

Passenger Vehicle. When a tire size begins with a P, it signifies the tire is a p-metric size that was designed to be fitted on vehicles that are primarily used as passenger vehicles. This includes cars, minivans, sport utility vehicles and light duty pickup trucks (typically 1/4- and 1/2-ton load capacity). The use of p-metric sizes began in the late 1970s and they are the most frequently used type of tire size today.

255 millimeters wide

Tire Width

Following the letter(s) that identify the type of vehicle and/or type of service for which the tire was designed, the three-digit numeric portion identifies the tire's section width/cross section in millimeters.

The 255 indicates that this tire is 255 millimeters across from the widest point when mounted and measured on a specified width wheel. Because many people think of measurements in inches, the 255mm can be converted to inches by dividing the width in millimeters by 25.4 (the number of millimeters per inch).

255mm / 25.4 = 10.04"

60%

Aspect Ratio

The ratio of the height of the tire's cross-section to it's width. 60 means that the height is equal to 60% of the tire's width.

Typically, following the three digits identifying the tire's width in millimeters is a two-digit number that identifies the tire's profile or aspect ratio.

The 60 indicates that this tire size's sidewall height (from rim to tread) is 50% of its width. The measurement is the tire's section height, and also referred to as the tire's series, profile or aspect ratio. The higher the number, the taller the sidewall. The lower the number, the lower the sidewall. We know that this tire size's section width is 255mm and that its section height is 50% of 255mm. By converting the 255mm to inches (255 / 25.4 = 10.04") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of 5.02".

R

Construction Method

Radial. The R in the P255/60R19 108S size identifies that the tire has a radial construction in which the tire's plies "radiate" out from the center of the wheel. Radial tires are by far the most popular type of tire today representing over 98% of all tires sold.

If the R in the size was replaced with a D (P255/60R19 108S), it would identify that the internal tire body plies crisscross on a diagonal and that the tire has a "bias ply" construction. Tires using this construction are for light truck and spare tire applications.

19" wheel

Rim Size

The 19 indicates the tire and wheel diameter designed to be matched together.

Tires that have a rim diameter expressed in inches (P255/60R19 108S, as well as 8, 10, 12, 13, 14,15, 17, 18, 19, 20, 22, 23, 24, 26 and 28) are called "inch rim" sizes. These are the most common types of tire sizes and are used on most cars, minivans, vans, sport utility vehicles and light duty light trucks.

Tires and wheels with unique rim diameters should never be combined with traditional "inch rim" tires and wheels.

Load Range/Ply Rating

This tire has a ply rating of which indicates how much load the tire is designed to carry at it's specified pressure.

108

Load Index/Service Description

2181lb load. The tire assigned numerical value used to compare relative load carrying capabilities.

The 108 represents the tire's service description. A service description identifies the tire's load index and speed rating. Service descriptions are required on all speed rated (except for Z-speed rated) tires manufactured since the early 1990s.

S

Speed Rating

180mph. The maximum speed that the tire can sustain for 10 minutes.

Today, the only tires that continue to include the speed rating "in" the tire size (P255/60R19 108S) are Z-speed rated tires. In this case, following the two digits used to identify the aspect ratio are the letters ZR to identify the tire's speed rating (Z) and its internal construction (R). Since 1991, all other speed ratings are identified in the tire's Service Description.

(20 Inch Option)


P255/55R20 107H

(click for a tire code explanation)

P

Intended Use Of Tire

Passenger Vehicle. When a tire size begins with a P, it signifies the tire is a p-metric size that was designed to be fitted on vehicles that are primarily used as passenger vehicles. This includes cars, minivans, sport utility vehicles and light duty pickup trucks (typically 1/4- and 1/2-ton load capacity). The use of p-metric sizes began in the late 1970s and they are the most frequently used type of tire size today.

255 millimeters wide

Tire Width

Following the letter(s) that identify the type of vehicle and/or type of service for which the tire was designed, the three-digit numeric portion identifies the tire's section width/cross section in millimeters.

The 255 indicates that this tire is 255 millimeters across from the widest point when mounted and measured on a specified width wheel. Because many people think of measurements in inches, the 255mm can be converted to inches by dividing the width in millimeters by 25.4 (the number of millimeters per inch).

255mm / 25.4 = 10.04"

55%

Aspect Ratio

The ratio of the height of the tire's cross-section to it's width. 55 means that the height is equal to 55% of the tire's width.

Typically, following the three digits identifying the tire's width in millimeters is a two-digit number that identifies the tire's profile or aspect ratio.

The 55 indicates that this tire size's sidewall height (from rim to tread) is 50% of its width. The measurement is the tire's section height, and also referred to as the tire's series, profile or aspect ratio. The higher the number, the taller the sidewall. The lower the number, the lower the sidewall. We know that this tire size's section width is 255mm and that its section height is 50% of 255mm. By converting the 255mm to inches (255 / 25.4 = 10.04") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of 5.02".

R

Construction Method

Radial. The R in the P255/55R20 107H size identifies that the tire has a radial construction in which the tire's plies "radiate" out from the center of the wheel. Radial tires are by far the most popular type of tire today representing over 98% of all tires sold.

If the R in the size was replaced with a D (P255/55R20 107H), it would identify that the internal tire body plies crisscross on a diagonal and that the tire has a "bias ply" construction. Tires using this construction are for light truck and spare tire applications.

20" wheel

Rim Size

The 20 indicates the tire and wheel diameter designed to be matched together.

Tires that have a rim diameter expressed in inches (P255/55R20 107H, as well as 8, 10, 12, 13, 14,15, 17, 18, 19, 20, 22, 23, 24, 26 and 28) are called "inch rim" sizes. These are the most common types of tire sizes and are used on most cars, minivans, vans, sport utility vehicles and light duty light trucks.

Tires and wheels with unique rim diameters should never be combined with traditional "inch rim" tires and wheels.

Load Range/Ply Rating

This tire has a ply rating of which indicates how much load the tire is designed to carry at it's specified pressure.

107

Load Index/Service Description

2161lb load. The tire assigned numerical value used to compare relative load carrying capabilities.

The 107 represents the tire's service description. A service description identifies the tire's load index and speed rating. Service descriptions are required on all speed rated (except for Z-speed rated) tires manufactured since the early 1990s.

H

Speed Rating

210mph. The maximum speed that the tire can sustain for 10 minutes.

Today, the only tires that continue to include the speed rating "in" the tire size (P255/55R20 107H) are Z-speed rated tires. In this case, following the two digits used to identify the aspect ratio are the letters ZR to identify the tire's speed rating (Z) and its internal construction (R). Since 1991, all other speed ratings are identified in the tire's Service Description.

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buick

Buick, formally the Buick Motor Division, is an upscale automobile brand of the American manufacturer General Motors (GM). It has the distinction of being the oldest active American marque of automobile, and was the company that established General Motors in 1908. Before the establishment of General Motors, GM founder William C. Durant had served as Buick's general manager and major investor. Buick also has the distinction of being the first automobile maker in the world to equip its cars with overhead valve engines, which it did starting in 1904.

For much of its existence in the North American market, Buick has been marketed as a premium automobile brand, selling luxury vehicles positioned above GM's mainstream brands, e.g. Chevrolet, while below the flagship luxury Cadillac division. Buick-branded vehicles are also known for reliability, ranking high in Consumer Reports' brand reliability ratings.[2]

In 2015, Buick sold 1,231,941 vehicles, a record for the brand.[3] The main market is in China, where 80% of Buick-branded automobiles are sold.[4] Buicks are also sold in the United States, Canada, and Mexico.

Wikipedia