3.0si, 4.8i


255/55R18/RF 109H Runflat

(click for a tire code explanation)

255

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"

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 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".

R

Construction Method

Radial. The R in the 255/55R18/RF 109H Runflat 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 (255/55R18/RF 109H Runflat), 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 (255/55R18/RF 109H Runflat, 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.

109

Load Index/Service Description

2201lb load. The tire assigned numerical value used to compare relative load carrying capabilities.

The 109 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 (255/55R18/RF 109H Runflat) 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.

4.8i w/Sport Pkg. (19 Inch Option)


Front Tires

Intended Use Of Tire

P ... 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.

Tire Width

255 millimeters

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"

Aspect Ratio

50%

The ratio of the height of the tire's cross-section to it's width. 50 means that the height is equal to 50% 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 50 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 of5.02".

Construction Method

R ... Radial

The R in the 255/50R19/RF 107V Runflat 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 (255/50R19/RF 107V Runflat), 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.

Rim Size

19" wheel

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

Tires that have a rim diameter expressed in inches (255/50R19/RF 107V Runflat, as well as8, 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

RF

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

Load Index/Service Description

107 ... 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.

Speed Rating

V ... 240mph

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 (255/50R19/RF 107V Runflat) 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.


Rear Tires

Intended Use Of Tire

P ... 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.

Tire Width

285 millimeters

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 285 indicates that this tire is 285 millimeters across from the widest point when mounted and measured on a specified width wheel. Because many people think of measurements in inches, the 285mm can be converted to inches by dividing the width in millimeters by 25.4 (the number of millimeters per inch).

285mm / 25.4 = 11.22"

Aspect Ratio

45%

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 285mm and that its section height is 50% of 285mm. By converting the 285mm to inches (285 / 25.4 = 11.22") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of5.61".

Construction Method

R ... Radial

The R in the 285/45R19/RF 111V Runflat 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 (285/45R19/RF 111V Runflat), 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.

Rim Size

19" wheel

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

Tires that have a rim diameter expressed in inches (285/45R19/RF 111V Runflat, as well as8, 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

RF

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

Load Index/Service Description

111 ... 2242lb load

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

The 111 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.

Speed Rating

V ... 240mph

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 (285/45R19/RF 111V Runflat) 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.

3.0si w/Sport Pkg.


255/50R19/RF 107H Runflat

(click for a tire code explanation)

255

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"

50%

Aspect Ratio

The ratio of the height of the tire's cross-section to it's width. 50 means that the height is equal to 50% 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 50 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".

R

Construction Method

Radial. The R in the 255/50R19/RF 107H Runflat 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 (255/50R19/RF 107H Runflat), 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 (255/50R19/RF 107H Runflat, 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.

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 (255/50R19/RF 107H Runflat) 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.

4.8i w/Sport Pkg. (20 Inch Option)


Front Tires

Intended Use Of Tire

P ... 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.

Tire Width

275 millimeters

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 275 indicates that this tire is 275 millimeters across from the widest point when mounted and measured on a specified width wheel. Because many people think of measurements in inches, the 275mm can be converted to inches by dividing the width in millimeters by 25.4 (the number of millimeters per inch).

275mm / 25.4 = 10.83"

Aspect Ratio

40%

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 275mm and that its section height is 50% of 275mm. By converting the 275mm to inches (275 / 25.4 = 10.83") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of5.42".

Construction Method

R ... Radial

The R in the 275/40R20/RF 106V Runflat 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 (275/40R20/RF 106V Runflat), 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.

Rim Size

20" wheel

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

Tires that have a rim diameter expressed in inches (275/40R20/RF 106V Runflat, as well as8, 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

RF

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

Load Index/Service Description

106 ... 2141lb load

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

The 106 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.

Speed Rating

V ... 240mph

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 (275/40R20/RF 106V Runflat) 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.


Rear Tires

Intended Use Of Tire

P ... 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.

Tire Width

315 millimeters

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 315 indicates that this tire is 315 millimeters across from the widest point when mounted and measured on a specified width wheel. Because many people think of measurements in inches, the 315mm can be converted to inches by dividing the width in millimeters by 25.4 (the number of millimeters per inch).

315mm / 25.4 = 12.40"

Aspect Ratio

35%

The ratio of the height of the tire's cross-section to it's width. 35 means that the height is equal to 35% 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 35 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 315mm and that its section height is 50% of 315mm. By converting the 315mm to inches (315 / 25.4 = 12.40") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of6.20".

Construction Method

R ... Radial

The R in the 315/35R20/RF 110V Runflat 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 (315/35R20/RF 110V Runflat), 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.

Rim Size

20" wheel

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

Tires that have a rim diameter expressed in inches (315/35R20/RF 110V Runflat, as well as8, 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

RF

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

Load Index/Service Description

110 ... 2222lb load

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

The 110 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.

Speed Rating

V ... 240mph

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 (315/35R20/RF 110V Runflat) 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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BMW is the abbreviation for the Bavarian motor vehicle company called Bayerische Motoren Werke AG (translated as Bavarian Motor Works in English). BMW currently produces automobiles and motorcycles, and produced aircraft engines until 1945.

The company was founded in 1916 and is is headquartered in Munich, Bavaria. BMW produces motor vehicles in Germany, Brazil, China, India, South Africa and the United States. In 2015, BMW was the world's twelfth largest producer of motor vehicles, with 2,279,503 vehicles produced.[4] The Quandt family are long-term shareholders of the company, with the remaining stocks owned by public float.

Automobiles are marketed under the brands BMW (with sub-brands BMW M for performance models and BMW i for plug-in electric cars), Mini and Rolls-Royce. Motorcycles are marketed under the brand BMW Motorrad.

The company has significant motorsport history, especially in touring cars, Formula 1, sports cars and the Isle of Man TT.

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