2012 Fisker Karma
tire size detail
(Winter Tires)
F: 245/40R21/XL 100VR: 265/40R21/XL 105V
(click for a tire code explanation)
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
245 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 245 indicates that this tire is 245 millimeters across from the widest point when mounted and measured on a specified width wheel. Because many people think of measurements in inches, the 245mm can be converted to inches by dividing the width in millimeters by 25.4 (the number of millimeters per inch).
245mm / 25.4 = 9.65"
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 245mm and that its section height is 50% of 245mm. By converting the 245mm to inches (245 / 25.4 = 9.65") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of4.83".
Construction Method
R ... Radial
The R in the 245/40R21/XL 100V 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 (245/40R21/XL 100V), 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
21" wheel
The 21 indicates the tire and wheel diameter designed to be matched together.
Tires that have a rim diameter expressed in inches (245/40R21/XL 100V, 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
XL
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
100 ... 2020lb load
The tire assigned numerical value used to compare relative load carrying capabilities.
The 100 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 (245/40R21/XL 100V) 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
265 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 265 indicates that this tire is 265 millimeters across from the widest point when mounted and measured on a specified width wheel. Because many people think of measurements in inches, the 265mm can be converted to inches by dividing the width in millimeters by 25.4 (the number of millimeters per inch).
265mm / 25.4 = 10.43"
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 265mm and that its section height is 50% of 265mm. By converting the 265mm to inches (265 / 25.4 = 10.43") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of5.21".
Construction Method
R ... Radial
The R in the 265/40R21/XL 105V 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 (265/40R21/XL 105V), 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
21" wheel
The 21 indicates the tire and wheel diameter designed to be matched together.
Tires that have a rim diameter expressed in inches (265/40R21/XL 105V, 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
XL
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
105 ... 2121lb load
The tire assigned numerical value used to compare relative load carrying capabilities.
The 105 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 (265/40R21/XL 105V) 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
F: 255/35R22/XL 99WR: 285/35R22 102W
(click for a tire code explanation)
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
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 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 255/35R22/XL 99W 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 (255/35R22/XL 99W), 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
22" wheel
The 22 indicates the tire and wheel diameter designed to be matched together.
Tires that have a rim diameter expressed in inches (255/35R22/XL 99W, 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
XL
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
99 ... 1999lb load
The tire assigned numerical value used to compare relative load carrying capabilities.
The 99 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
W ... 270mph
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 (255/35R22/XL 99W) 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
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 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 285/35R22 102W 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 (285/35R22 102W), 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
22" wheel
The 22 indicates the tire and wheel diameter designed to be matched together.
Tires that have a rim diameter expressed in inches (285/35R22 102W, 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.
Speed Rating
... mph
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 (285/35R22 102W) 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.
Fisker Automotive, now Fisker Inc., was a firm which made the Fisker Karma, which was one of the world's first production plug-in hybrid electric vehicles. It debuted at the 2008 North American International Auto Show, and first deliveries were in 2011. Production of the Fisker Karma was suspended in November 2012 due to bankruptcy of its battery supplier A123 Systems,[9] with about 2,450 Karmas built since 2011 and over 2000 cars sold worldwide.[10] In February 2014, the company's designs, engineering and manufacturing facility were purchased by Chinese auto parts conglomerate Wanxiang Group. Henrik Fisker retained the Fisker trademarks and the Fisker brand and relaunched Fisker Inc, and so Wanxiang named its new company Karma Automotive.