Tire Size Page
305/45R18 Tire Size
A 305/45R18 tire is approximately 28.81 inches tall, with a sidewall height of 5.40 inches and about 700.1 revolutions per mile.
TL;DR: 305/45R18 combines a 305 mm section width, a 45% aspect ratio, and a 18-inch wheel diameter.
Quick facts
Diameter
28.81 in
732 mm overall height
Sidewall
5.40 in
137 mm sidewall height
Circumference
90.50 in
2299 mm per rotation
Revs / Mile
700.1
435.0 revs per kilometer
305/45R18 Dimensions
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 28.81 | 732 |
| Sidewall height | 5.40 | 137 |
| Section width | 12.01 | 305 |
| Circumference | 90.50 | 2299 |
| Wheel diameter | 18 | 457 |
| Revolutions per mile | 700.1 | — |