205/45 R17 tires diameter is 24.3 inches, section width is 8.1 inches and rim diameter is 17 inches. So the closest metric tire size of 205/45R17 existing size in inches is 31x10.50R17, which is 27.57% taller and 29.63% wider.
Compare 205/45 R17 vs 31x10.50R17 with our handy tire size calculator.
For each tire size there often there are several wheel sizes. You can't put very wide tires on narrow rims or vise versa. Here is what size of the rims do you need for 205/45 R17 tires:
Rim diameter x rim width
|205||The first number shows that the tire has a width of 205 millimeters or approximately 8.1 inches.|
|45||The second number is the aspect ratio. In this case, it is 45%. It shows the height of the tire from the ground to rim edge, which is 45% of the width or ~ 93mm|
|R17||The letter R means this tire is radial. Most of all tires nowadays are radial. The number is the tire diameter in inches. It means that tire will fit 17 inch wheels|