Tire sizes / 255/55R18
255/55R18 Tire Size
255/55R18
- 255: tread width of 255 mm (10 in)
- 55: sidewall height is 55% of the width, about 140 mm
- R: radial construction
- 18: fits a 18-inch wheel
Dimensions
| Overall diameter | 29 in (738 mm) |
|---|---|
| Section width | 10 in (255 mm) |
| Sidewall height | 5.5 in (140 mm) |
| Wheel diameter | 18 in |
| Revolutions per mile | about 694 |
Nominal figures calculated from the size code. Real tires vary a little by brand and tread depth.
Cars that came with 255/55R18 tires
Factory fitment only, from owner's manuals. Many other cars can run this size; check with a tire shop before changing size.