Tire Size Page
245/55R18 Tire Size
A 245/55R18 tire is approximately 28.61 inches tall, with a sidewall height of 5.31 inches and about 704.9 revolutions per mile.
TL;DR: 245/55R18 combines a 245 mm section width, a 55% aspect ratio, and a 18-inch wheel diameter.
Quick facts
Diameter
28.61 in
727 mm overall height
Sidewall
5.31 in
135 mm sidewall height
Circumference
89.88 in
2283 mm per rotation
Revs / Mile
704.9
438.0 revs per kilometer
245/55R18 Dimensions
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 28.61 | 727 |
| Sidewall height | 5.31 | 135 |
| Section width | 9.65 | 245 |
| Circumference | 89.88 | 2283 |
| Wheel diameter | 18 | 457 |
| Revolutions per mile | 704.9 | — |