245/40R19 Tire Size Specifications & Compatible Vehicles

679mm98mm245/40R19Width: 245mm (9.6")
Overall Diameter
678.6 mm
Section Width
245 mm
Sidewall Height
98.0 mm
Circumference
2131.9 mm
Revs/Mile
755
Rim Diameter
19"
Inch Equivalent
26.7x9.6R19
Rim Width (ETRTO)
7.0" – 9.0"

Compatible Vehicles

The following vehicles use 245/40R19 tires from the factory:

Alternative Tire Sizes

These tire sizes are within 3% overall diameter of 245/40R19 and may be used as replacements:

Popular Comparisons

See how 245/40R19 compares to other common tire sizes:

Understanding 245/40R19

The tire size 245/40R19 means the tire has a section width of 245mm, an aspect ratio of 40% (the sidewall height is 40% of the width), and fits a 19-inch rim.

Sidewall Height = 245 x 0.4 = 98.0 mm
Overall Diameter = (98.0 x 2) + (19 x 25.4) = 678.6 mm
Circumference = 678.6 x π = 2131.9 mm

Frequently Asked Questions

The 245/40R19 tire size is used on 16 vehicle trims including the 2025 Cadillac CT5, 2025 Genesis G80, 2024 Genesis G80 and 13 more.
A 245/40R19 tire has an overall diameter of 678.6mm (26.7 inches). The sidewall height is 98.0mm, and the total circumference is 2132mm.
For 245/40R19 tires, the ETRTO recommended rim width is 8.0". The acceptable range is 7.0" minimum to 9.0" maximum. Using a rim outside this range can cause improper bead seating and unsafe handling.
Yes, as long as the replacement tire overall diameter is within 3% of the 245/40R19 678.6mm diameter. Compatible alternatives include 155/55R20, 285/30R20, 185/60R18. Use our Tire Size Calculator to compare any two sizes.

Related Tools