4 ms·
This is still better than tires, where the diameter seems to be listed in inches around the world even though other measurements such as the width are usually i
by vinay427 6y ago
This is still better than tires, where the diameter seems to be listed in inches around the world even though other measurements such as the width are usually in millimeters everywhere.
- avar 6y agoTires are their own special measurement hell. A 17 inch tire does not have a diameter of 17 inches. Those 17 inches are the diameter of the rim it's supposed to sit on[1]. Thus e.g. a 245/45 R17 tire has a diameter of around 26 inches. As you can deduct from the "simple" formula of: 245/10*45/100/2.54*2+17 =~ 25.7 I.e. the width is 245mm, the cross section of the tire is 45% of that, or ~110mm, multiply that by 2 and add the 17 inches and you've got the outer tire diameter. 1. https://www.moderntiredealer.com/8644/understanding-tire-dimensions https://www.moderntiredealer.com/8644/understanding-tire-dim...