What size is 37×13 50r20?
In this case, the tire is 37 inches (939. The second number is the tire’s width in inches. This means that the tire is 13. R – This indicates that the tire was manufactured with a radial construction, which is the most common tire construction type used today. The most common width for a 37-inch-tall tire is 12. The 38-inch-tall Trail Grappler has a slightly wider 13. This added width is barely noticeable on-road but will be a benefit on the trail.
What size is 37×12 50R20?
In this case, the tire is 37 inches (939. The second number is the tire’s width in inches. This means that the tire is 12. Therefore, the tire size 375/55r20 can be expressed in inches as roughly 14.