Base


205/55R16 91H

(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.

205 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 205 indicates that this tire is 205 millimeters across from the widest point when mounted and measured on a specified width wheel. Because many people think of measurements in inches, the 205mm can be converted to inches by dividing the width in millimeters by 25.4 (the number of millimeters per inch).

205mm / 25.4 = 8.07"

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 205mm and that its section height is 50% of 205mm. By converting the 205mm to inches (205 / 25.4 = 8.07") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of 4.04".

R

Construction Method

Radial. The R in the 205/55R16 91H 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 (205/55R16 91H), 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.

16" wheel

Rim Size

The 16 indicates the tire and wheel diameter designed to be matched together.

Tires that have a rim diameter expressed in inches (205/55R16 91H, 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.

91

Load Index/Service Description

1838lb load. The tire assigned numerical value used to compare relative load carrying capabilities.

The 91 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 (205/55R16 91H) 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, Sport, Sportwagon, VDP


225/45R17 91H

(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.

225 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 225 indicates that this tire is 225 millimeters across from the widest point when mounted and measured on a specified width wheel. Because many people think of measurements in inches, the 225mm can be converted to inches by dividing the width in millimeters by 25.4 (the number of millimeters per inch).

225mm / 25.4 = 8.86"

45%

Aspect Ratio

The ratio of the height of the tire's cross-section to it's width. 45 means that the height is equal to 45% 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 45 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 225mm and that its section height is 50% of 225mm. By converting the 225mm to inches (225 / 25.4 = 8.86") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of 4.43".

R

Construction Method

Radial. The R in the 225/45R17 91H 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 (225/45R17 91H), 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.

17" wheel

Rim Size

The 17 indicates the tire and wheel diameter designed to be matched together.

Tires that have a rim diameter expressed in inches (225/45R17 91H, 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.

91

Load Index/Service Description

1838lb load. The tire assigned numerical value used to compare relative load carrying capabilities.

The 91 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 (225/45R17 91H) 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.

(18 Inch Option), Sport, Sportwagon, VDP


225/40ZR18/RF 92Y

(click for a tire code explanation)

225

Intended Use Of Tire

.

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

mm / 25.4 = NaN"

40%

Aspect Ratio

The ratio of the height of the tire's cross-section to it's width. 40 means that the height is equal to 40% 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 40 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 mm and that its section height is 50% of mm. By converting the mm to inches ( / 25.4 = NaN") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of NaN".

ZR

Construction Method

. The R in the 225/40ZR18/RF 92Y 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 (225/40ZR18/RF 92Y), 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.

18" wheel

Rim Size

The 18 indicates the tire and wheel diameter designed to be matched together.

Tires that have a rim diameter expressed in inches (225/40ZR18/RF 92Y, 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.

RF

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.

92

Load Index/Service Description

1858lb load. The tire assigned numerical value used to compare relative load carrying capabilities.

The 92 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.

Y

Speed Rating

300mph. 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 (225/40ZR18/RF 92Y) 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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jaguar

Jaguar (UK English: /ˈdʒæɡjuː.ər/ JAG-ew-ər, US English: /ˈdʒæɡwɑːr/ JAG-wɑɹ) is the luxury vehicle brand of Jaguar Land Rover,[1] a British multinational car manufacturer with its headquarters in Whitley, Coventry, England, owned by the Indian company Tata Motors since 2008.

Jaguar's business was founded as the Swallow Sidecar Company in 1922, originally making motorcycle sidecars before developing bodies for passenger cars. Under the ownership of S. S. Cars Limited the business extended to complete cars made in association with Standard Motor Co, many bearing Jaguar as a model name. The company's name was changed from S. S. Cars to Jaguar Cars in 1945. A merger with the British Motor Corporation followed in 1966,[3] the resulting enlarged company now being renamed as British Motor Holdings (BMH), which in 1968 merged with Leyland Motor Corporation and became British Leyland, itself to be nationalised in 1975.

Jaguar was de-merged from British Leyland and was listed on the London Stock Exchange in 1984, becoming a constituent of the FTSE 100 Index until it was acquired by Ford in 1990.[4] Jaguar has, in recent years, manufactured cars for the British Prime Minister, the most recent delivery being an XJ in May 2010.[5] The company also holds royal warrants from Queen Elizabeth II and Prince Charles.[6]

Jaguar cars today are designed in Jaguar Land Rover's engineering centres at the Whitley plant in Coventry and at their Gaydon site in Warwickshire, and are assembled in their plants at Castle Bromwich and Solihull.

In September 2013 Jaguar Land Rover announced plans to open a 100 million GBP (160 million USD) research and development centre in the University of Warwick, Coventry to create a new generation of vehicle technologies. The carmaker said around 1,000 academics and engineers would work there and that construction would start in 2014.

Wikipedia