245/40R19 In Inches – Tire Size & Wheel Fitment Guide

What size tire is 245/40R19 in Inches?

The 245/40R19 tire has an overall diameter of 26.7 inches, a section width of 9.6 inches, and can be mounted on 19 x 8.0-9.5 inches rim. The equivalent tire size in the high flotation system is 26.7x9.6R19.

	Inches	Millimeters
Tire Diameter	26.7	678.6
Section Width	9.6	245
Rim Height	19	483
Sidewall Height	3.9	98
Circumference	83.9	2131.9

9.6"

26.7"

83.9"

19"

3.9"

754.9 Revs/Mile

To help you understand, we'll break down each part of the 245/40R19 tire size to know what these numbers represent & how they may affect your tire's performance:

How wide is a 245/40R19 tire?

The 245/40R19 tire has a width of 9.6 inches (245 mm). This is the measurement at its thickest point, the distance between the outer sidewall and the inner sidewall’s widest point, also called as tread width or section width.

How tall is a 245/40R19 tire?

The 245/40R19 tire has a height of 26.7 inches (678.6 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 unloaded.

245/40R19 sidewall height

The 245/40R19 has a sidewall height of 3.9 inches (98 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 you need for 245/40R19 tire?

You can mount the 245/40R19 tire on a rim with a height of 19 inches and a width ranging from 8.0-9.5 inches. (Based on recommendations of The Tire and Rim Association (TRA))

Putting very narrow tires on wide rims or vice versa can result in reduced performance of the tire.

245/40R19 circumference

The 245/40R19 tire has a circumference of 83.9 inches (2131.9 mm), This is the measurement of the distance the tire travels in one revolution.

The tire circumference is important for your vehicle's overall performance, affecting its speedometer acceleration, accuracy and fuel efficiency.

245/40R19 Revolutions

The 245/40R19 performs 754.9 revs/mile. Revolutions per mile indicate the number of times a tire rotates while it covers the distance of one mile.

Replacement Tire Sizes for 245/40R19

As a rule, you can replace the tire within a 3% difference in tire diameter (height) of the OEM tire size. Here is a list of compatible tire sizes for 245/40R19: