Tire Size for 2004 Audi A8

2004 Audi A8 Tire Sizes

Select a box to get your vehicle's tire size.

Original Tire Size (Show Details)

235/55R17 99Y

235	This number indicates that your tire has a width of 235 millimeters.
55	This number indicates that your tire has an aspect ratio of 55%. This means that your tire's sidewall height (from the edge of the rim to the tire's tread) is 55% of the width.
R	This letter indicates how your tire was constructed. Radial is the standard construction method for about 98% of all tires sold today. R = Radial B = Bias Belt D = Diagonal
17	The tire size was designed to fit rims that are 17 inches in diameter.
99	This tire has a load index of 99, which means it's capable of carrying a load of 1709 pounds (775 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
Y	This tire has a speed rating of Y, which means 186 mph (300 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.

Alternate Tire Size (Show Details)

255/45R18 99Y

255	This number indicates that your tire has a width of 255 millimeters.
45	This number indicates that your tire has an aspect ratio of 45%. This means that your tire's sidewall height (from the edge of the rim to the tire's tread) is 45% of the width.
R	This letter indicates how your tire was constructed. Radial is the standard construction method for about 98% of all tires sold today. R = Radial B = Bias Belt D = Diagonal
18	The tire size was designed to fit rims that are 18 inches in diameter.
99	This tire has a load index of 99, which means it's capable of carrying a load of 1709 pounds (775 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
Y	This tire has a speed rating of Y, which means 186 mph (300 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.

Original Tire Size (Show Details)

255/40R19/ 100Y

255	This number indicates that your tire has a width of 255 millimeters.
40	This number indicates that your tire has an aspect ratio of 40%. This means that your tire's sidewall height (from the edge of the rim to the tire's tread) is 40% of the width.
R	This letter indicates how your tire was constructed. Radial is the standard construction method for about 98% of all tires sold today. R = Radial B = Bias Belt D = Diagonal
19	The tire size was designed to fit rims that are 19 inches in diameter.
100	This tire has a load index of 100, which means it's capable of carrying a load of 1764 pounds (800 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
Y	This tire has a speed rating of Y, which means 186 mph (300 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.

Original Tire Size (Show Details)

235/55R17 99H

235	This number indicates that your tire has a width of 235 millimeters.
55	This number indicates that your tire has an aspect ratio of 55%. This means that your tire's sidewall height (from the edge of the rim to the tire's tread) is 55% of the width.
R	This letter indicates how your tire was constructed. Radial is the standard construction method for about 98% of all tires sold today. R = Radial B = Bias Belt D = Diagonal
17	The tire size was designed to fit rims that are 17 inches in diameter.
99	This tire has a load index of 99, which means it's capable of carrying a load of 1709 pounds (775 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
H	This tire has a speed rating of H, which means 130 mph (210 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.

Alternate Tire Size (Show Details)

255/45R18 99H

255	This number indicates that your tire has a width of 255 millimeters.
45	This number indicates that your tire has an aspect ratio of 45%. This means that your tire's sidewall height (from the edge of the rim to the tire's tread) is 45% of the width.
R	This letter indicates how your tire was constructed. Radial is the standard construction method for about 98% of all tires sold today. R = Radial B = Bias Belt D = Diagonal
18	The tire size was designed to fit rims that are 18 inches in diameter.
99	This tire has a load index of 99, which means it's capable of carrying a load of 1709 pounds (775 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
H	This tire has a speed rating of H, which means 130 mph (210 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.