Tire Size for 2004 Bmw Z4

2004 Bmw Z4 Tire Sizes

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

Original Tire Size (Show Details)

225/50R16 92V

225	This number indicates that your tire has a width of 225 millimeters.
50	This number indicates that your tire has an aspect ratio of 50%. This means that your tire's sidewall height (from the edge of the rim to the tire's tread) is 50% 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
16	The tire size was designed to fit rims that are 16 inches in diameter.
92	This tire has a load index of 92, which means it's capable of carrying a load of 1389 pounds (630 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
V	This tire has a speed rating of V, which means 149 mph (240 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.

Alternate Tire Size (Show Details)

225/45R17 91W

225	This number indicates that your tire has a width of 225 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
17	The tire size was designed to fit rims that are 17 inches in diameter.
91	This tire has a load index of 91, which means it's capable of carrying a load of 1356 pounds (615 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
W	This tire has a speed rating of W, which means 168 mph (270 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.

Original Tire Size (Show Details)

225/45R17 91W

225	This number indicates that your tire has a width of 225 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
17	The tire size was designed to fit rims that are 17 inches in diameter.
91	This tire has a load index of 91, which means it's capable of carrying a load of 1356 pounds (615 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
W	This tire has a speed rating of W, which means 168 mph (270 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.

Front Tire Size (Show Details)

225/40ZR18 88W

225	This number indicates that your tire has a width of 225 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
18	The tire size was designed to fit rims that are 18 inches in diameter.
88	This tire has a load index of 88, which means it's capable of carrying a load of 1235 pounds (560 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
W	This tire has a speed rating of W, which means 168 mph (270 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.
Z	This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (over 240 km/h). The tire's speed class is less specific than the speed rating.

Rear Tire Size (Show Details)

255/35ZR18 90W

255	This number indicates that your tire has a width of 255 millimeters.
35	This number indicates that your tire has an aspect ratio of 35%. This means that your tire's sidewall height (from the edge of the rim to the tire's tread) is 35% 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.
90	This tire has a load index of 90, which means it's capable of carrying a load of 1323 pounds (600 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
W	This tire has a speed rating of W, which means 168 mph (270 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.
Z	This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (over 240 km/h). The tire's speed class is less specific than the speed rating.