315/30R30 In Inches – Tire Size & Rim Fitment Guide
What size tire is 315/30R30 in Inches?
The 315/30R30 tire has an overall diameter of 37.4 inches, a section width of 12.4 inches, and can be mounted on 30 x 10.5-11.5 inches rim. The equivalent tire size in the high flotation system is 37.4x12.4R30.
| Inches | Millimeters | |
| Tire Diameter | 37.4 | 951 |
| Section Width | 12.4 | 315 |
| Rim Height | 30 | 762 |
| Sidewall Height | 3.7 | 94.5 |
| Circumference | 117.6 | 2987.7 |
To make it clear, we'll break down each part of the 315/30R30 tire size to know what these numbers represent & how they may affect your vehicle tire's performance:
How tall is a 315/30R30 tire?
A 315/30R30 tire has a height of 37.4 inches (951 mm). This is the measurement from the bottom to the highest point at the top of a tire through its exact center when inflated and no load.
How wide is a 315/30R30 tire?
The 315/30R30 has a width of 12.4 inches (315 mm). This is the tire measurement at its thickest point, the distance between the inner sidewall’s and the outer sidewall’s widest point, also known as section width or tread width.
315/30R30 sidewall height
The sidewall height of a 315/30R30 is 3.7 inches (94.5 mm). It’s measured from the rim to the outer edge of the tire's tread, expressed as a percentage of tire width.
What size rim do I need for 315/30R30 tire?
You can put on a rim with a height of 30 inches and a rim width ranging from 10.5-11.5 inches for a 315/30R30 tire. (Based on recommendations of The Tire and Rim Association (TRA))
Putting very wide tires on narrow rims or vice versa can result in reduced performance of the tire.
315/30R30 circumference
The 315/30R30 tire has a circumference of 117.6 inches (2987.7 mm), This is the measurement of the distance the tire covers in one full rotation.
The tire circumference is important for your vehicle's overall performance, affecting its speedometer accuracy, acceleration & fuel efficiency.
315/30R30 Revolutions
The 315/30R30 performs 538.7 revs/mile. Revolutions per mile indicate the number of times a tire rotates while it covers the distance of one mile.
Alternative Tire Sizes for 315/30R30
As a rule, you can replace the tire within a 3% difference in tire diameter (height) of the OEM tire size. Here is the full list of replacement sizes compatible with 315/30R30:
*Disclaimer: Please note that our tire dimensions & measurements are an approximation number, while the tire manufacturers may have different ways in calculating or rounding numbers. We recommend referring to the vehicle manufacturer's manual or checking with the tire technician to find out the correct tire size for your vehicle.