245/40R19 Tire Size Specifications & Compatible Vehicles
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:
2025 Cadillac CT5 V-Series 2025 Genesis G80 2.5T Advanced 2024 Genesis G80 2.5T Advanced 2021 Genesis G80 3.5T Sport 2020 Genesis G80 3.3T Sport 2025 Infiniti Q50 Red Sport 400 2024 Infiniti Q50 Red Sport 400 2023 Infiniti Q50 Red Sport 400 2022 Infiniti Q50 Red Sport 400 2021 Infiniti Q50 Red Sport 400 2020 Infiniti Q50 Red Sport 400 2025 Volvo S60 Ultimate B6 AWD 2023 Volvo S60 B6 R-Design 2022 Volvo S60 T6 R-Design 2021 Volvo S60 T6 R-Design 2020 Volvo S60 T6 R-Design
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
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.