Also why are dimensions include cm and inches? (225mm, 40mm, 17 inches)
2006-06-24 13:16:00 · 2 answers · asked by dimitmant 1 in Cars & Transportation ➔ Other - Cars & Transportation
Tradition, mostly. Metric tires have not been that popular in the U.S. all that long, pretty much since the late 70s-early 80s, and the average U.S. citizen is absolutely not going to adopt the metric system without a fight. So even though metric tires are almost all that is available worldwide, rims in inches are a global standard that would be very hard if not impossible to change. Tire makers just accept that, and stay with the inch measurement for rim size and metric for all other dimensions. The 225 number is the section width of the tire, traditionally odd to keep some kind of consistency. The 40 is the percentage of the tire's sidewall height to its section width, so it's probably not millimeters like you said. When a huge part of your market is the United States, you market them in inches or you won't sell many.
2006-06-24 13:27:24 · answer #1 · answered by Me again 6 · 0⤊ 0⤋
225/70r15s
225 is height 70is aspect ratio r is radial 15 is wheel size s is speed range
2006-06-24 13:23:52 · answer #2 · answered by James A 4 · 0⤊ 0⤋