2001 BMW 330i Tire Size
Your 2001 BMW 330i was manufactured with multiple tire sizes. Choose a tire size below to get a colorcoded explanation of the differences. Then pick the best tire size for your 2001 BMW 330i.
205/50R17/RF 93
Simplified Size: 2055017
Simplified size is useful for shopping and buying tires.
The original tire size for your 2001 BMW 330i is 205/50R17/RF 93V. A colorcoded explanation of the 2001 BMW 330i's tire size is shown below.
205  This number indicates that your tire has a width of 205 millimeters.  
17  The tire size was designed to fit rims or wheels that are 17 inches in diameter.  
RF  The mark of RF indicates that the tire is reinforced. This means it can handle a higher inflation pressure than a standard tire, which increases its maximum load.  
93  This tire has a load index of 93, which means it's capable of carrying a load of 1430 pounds (650 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.  
50  This number means that your tire has an aspect ratio of 50%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 50% of the width. In this case, the sidewall height works out to be 102 millimeters.  
R  This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
 
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. 
245/40ZR17(Rear)
Simplified Size: 2254517
Simplified size is useful for shopping and buying tires.
The original tire size for your 2001 BMW 330i is 225/45ZR17 (Front). A colorcoded explanation of the 2001 BMW 330i's tire size is shown below.
245  This number indicates that your tire has a width of 245 millimeters.  
17  The tire size was designed to fit rims or wheels that are 17 inches in diameter.  
Z  This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (240 km/h). A tire's speed class is less specific than the speed rating.  
40  This number means that your tire has an aspect ratio of 40%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 40% of the width. In this case, the sidewall height works out to be 98 millimeters.  
R  This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.

225/45ZR17(Front)
Simplified Size: 2454017
Simplified size is useful for shopping and buying tires.
The original tire size for your 2001 BMW 330i is 225/45ZR17 (Front). A colorcoded explanation of the 2001 BMW 330i's tire size is shown below.
225  This number indicates that your tire has a width of 225 millimeters.  
17  The tire size was designed to fit rims or wheels that are 17 inches in diameter.  
Z  This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (240 km/h). A tire's speed class is less specific than the speed rating.  
45  This number means that your tire has an aspect ratio of 45%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 45% of the width. In this case, the sidewall height works out to be 101 millimeters.  
R  This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
