245/50R18 Tire Size Specifications & Compatible Vehicles
Overall Diameter
702.2 mm
Section Width
245 mm
Sidewall Height
122.5 mm
Circumference
2206.0 mm
Revs/Mile
730
Rim Diameter
18"
Inch Equivalent
27.6x9.6R18
Rim Width (ETRTO)
7.0" – 9.0"
Compatible Vehicles
The following vehicles use 245/50R18 tires from the factory:
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 245/50R18 and may be used as replacements:
Popular Comparisons
See how 245/50R18 compares to other common tire sizes:
Understanding 245/50R18
The tire size 245/50R18 means the tire has a section width of 245mm, an aspect ratio of 50% (the sidewall height is 50% of the width), and fits a 18-inch rim.
Sidewall Height = 245 x 0.5 = 122.5 mm
Overall Diameter = (122.5 x 2) + (18 x 25.4) = 702.2 mm
Circumference = 702.2 x π = 2206.0 mm
Overall Diameter = (122.5 x 2) + (18 x 25.4) = 702.2 mm
Circumference = 702.2 x π = 2206.0 mm
Frequently Asked Questions
The 245/50R18 tire size is used on 5 vehicle trims including the 2024 Chevrolet Camaro, 2023 Chevrolet Camaro, 2022 Chevrolet Camaro and 2 more.
A 245/50R18 tire has an overall diameter of 702.2mm (27.6 inches). The sidewall height is 122.5mm, and the total circumference is 2206mm.
For 245/50R18 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 245/50R18 702.2mm diameter. Compatible alternatives include 175/70R18, 185/80R16, 225/60R17. Use our Tire Size Calculator to compare any two sizes.