Tire sizes / 225/40R18
225/40R18 Tire Size
225/40R18
- 225: tread width of 225 mm (8.9 in)
- 40: sidewall height is 40% of the width, about 90 mm
- R: radial construction
- 18: fits a 18-inch wheel
Dimensions
| Overall diameter | 25.1 in (637 mm) |
|---|---|
| Section width | 8.9 in (225 mm) |
| Sidewall height | 3.5 in (90 mm) |
| Wheel diameter | 18 in |
| Revolutions per mile | about 804 |
Nominal figures calculated from the size code. Real tires vary a little by brand and tread depth.
Cars that came with 225/40R18 tires
| Vehicle | Years |
|---|---|
| Hyundai Elantra GT | |
| Kia Forte | |
| Lexus IS | |
| Lexus IS C | |
| Toyota Corolla | |
| Toyota Corolla Hatchback | |
| Toyota Corolla Hybrid |
Factory fitment only, from owner's manuals. Many other cars can run this size; check with a tire shop before changing size.