Tire Size Page
155/85R18 Tire Size
A 155/85R18 tire is approximately 28.37 inches tall, with a sidewall height of 5.19 inches and about 710.8 revolutions per mile.
TL;DR: 155/85R18 combines a 155 mm section width, a 85% aspect ratio, and a 18-inch wheel diameter.
Quick facts
Diameter
28.37 in
721 mm overall height
Sidewall
5.19 in
132 mm sidewall height
Circumference
89.14 in
2264 mm per rotation
Revs / Mile
710.8
441.7 revs per kilometer
155/85R18 Dimensions
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 28.37 | 721 |
| Sidewall height | 5.19 | 132 |
| Section width | 6.10 | 155 |
| Circumference | 89.14 | 2264 |
| Wheel diameter | 18 | 457 |
| Revolutions per mile | 710.8 | — |