225/55R18 in inches
A 225/55R18 tire stands 27.7 inches tall and is 8.9 inches wide. It fits an 18-inch wheel.
Tall
27.7″
705 mm
Wide
8.9″
225 mm
Wheel
18″
rim diameter
Cars that come with 225/55R18
- 2019–2021 Hyundai TucsonSEL, Limited, Ultimate
- 2017–2022 Kia SportageEX, S, Nightfall
- 2018–2023 Subaru Crosstrek2.0i Limited, Limited, Hybrid
- 2024–2026 Subaru CrosstrekSport, Limited, Sport Hybrid…
- 2015–2018 Subaru Forester2.5i Touring, 2.0XT Premium, 2.0XT Touring
- 2019–2024 Subaru ForesterSport, Limited, Touring
- 2025–2026 Subaru ForesterLimited, Premium Hybrid, Limited Hybrid
Similar-height sizes
Within 3% of 225/55R18, so your speedometer stays close.
| Size | Height | vs 225/55R18 | |
|---|---|---|---|
| 245/45R19 | 27.7″ | −0.2%needs 19″ wheels | Compare |
| 225/60R17 | 27.6″ | −0.4%needs 17″ wheels | Compare |
| 255/35R21 | 28.0″ | +1.0%needs 21″ wheels | Compare |
| 255/40R20 | 28.0″ | +1.0%needs 20″ wheels | Compare |
| 255/45R19 | 28.0″ | +1.1%needs 19″ wheels | Compare |
| 235/60R17 | 28.1″ | +1.3%needs 17″ wheels | Compare |
| 235/45R19 | 27.3″ | −1.5%needs 19″ wheels | Compare |
| 235/55R18 | 28.2″ | +1.6% | Compare |
How 225/55R18 is measured
| Measurement | Inches | Millimetres |
|---|---|---|
| Overall height (diameter) | 27.74 | 705 |
| Tread width | 8.86 | 225 |
| Sidewall height | 4.87 | 124 |
| Distance per turn (circumference) | 87.2 | 2214 |
| Turns per mile | 727 | |
The first number (225) is the width in millimetres. The second (55) means the sidewall is 55% as tall as the tire is wide. The last (18) is the wheel size in inches. More on reading a tire size.