Tire Size for 2009 Bmw Z4

2009 Bmw Z4 Tire Sizes

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

2009 BMW Z4 sDrive30i

Original Tire Size (Show Details)

225/45R17 91V

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.
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.

2009 BMW Z4 sDrive35i

Front Tire Size (Show Details)

225/45R17 91V

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.
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.

Rear Tire Size (Show Details)

255/40R17 94V

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
17	The tire size was designed to fit rims that are 17 inches in diameter.
94	This tire has a load index of 94, which means it's capable of carrying a load of 1477 pounds (670 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.