Tire Size, metric
To find the APPROXIMATE height of a metric tire, multiply the section width by the aspect ratio/100, double it, convert to inches, and add the rim size. For the ACTUAL size, look up the specs for the particular brand, model, & size on TireRack.com or the manufacturer's website.
Flotation tires are sized by nominal height in inches x nominal width in inches, construction type, and rim diameter in inches, like:
31x10.50R15 (about 31" tall; ~10.5" wide; radial construction; 15" rim)
35x12.50B17 (~35" tall; ~12.5" wide; bias-ply; 17" rim)
For more info, including the DOT code (date of mfr.), see this:
https://www.nhtsa.gov/equipment/tires#aging https://www.nhtsa.gov/vehicle-safety/tires#the-topic-aging The "DOT" number has three 4-digit groups; the first two contain the manufacturer ID & other proprietary info; the last group is the date code in this format: the production week (00-52) & 2-digit year. So the last group for a tire built the 40th week of 2012 would be "4012".
.
.
.
.
![tire-metric-size.jpg Tire Size, metric
To find the APPROXIMATE height of a metric tire, multiply the section width by the aspect ratio/100, double it, convert to inches, and add the rim size. For the ACTUAL size, look up the specs for the particular brand, model, & size on TireRack.com or the manufacturer's website.
Flotation tires are sized by nominal height in inches x nominal width in inches, construction type, and rim diameter in inches, like:
31x10.50R15 (about 31" tall; ~10.5" wide; radial construction; 15" rim)
35x12.50B17 (~35" tall; ~12.5" wide; bias-ply; 17" rim)
For more info, including the DOT code (date of mfr.), see this:
https://www.nhtsa.gov/equipment/tires#aging
https://www.nhtsa.gov/vehicle-safety/tires#the-topic-aging
The "DOT" number has three 4-digit groups; the first two contain the manufacturer ID & other proprietary info; the last group is the date code in this format: the production week (00-52) & 2-digit year. So the last group for a tire built the 40th week of 2012 would be "4012".
[url=https://www.supermotors.net/registry/media/1156346][img]https://www.supermotors.net/getfile/1156346/thumbnail/20200101_171526.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/766462][img]https://www.supermotors.net/getfile/766462/thumbnail/07tiredate.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/1157411][img]https://www.supermotors.net/getfile/1157411/thumbnail/20200218_093008.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/680393][img]https://www.supermotors.net/getfile/680393/thumbnail/blister.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/762799][img]https://www.supermotors.net/getfile/762799/thumbnail/remingtons.jpg[/img][/url]](https://www.supermotors.net/getfile/76046/fullsize/tire-metric-size.jpg)