Tire sizes / 275/40R18
275/40R18 Tire Size
275/40R18
- 275: tread width of 275 mm (10.8 in)
- 40: sidewall height is 40% of the width, about 110 mm
- R: radial construction
- 18: fits a 18-inch wheel
Dimensions
| Overall diameter | 26.7 in (677 mm) |
|---|---|
| Section width | 10.8 in (275 mm) |
| Sidewall height | 4.3 in (110 mm) |
| Wheel diameter | 18 in |
| Revolutions per mile | about 756 |
Nominal figures calculated from the size code. Real tires vary a little by brand and tread depth.
Cars that came with 275/40R18 tires
Factory fitment only, from owner's manuals. Many other cars can run this size; check with a tire shop before changing size.