235/55R18 in inches
A 235/55R18 tire stands 28.2 inches tall and is 9.3 inches wide. It fits an 18-inch wheel.
Tall
28.2″
716 mm
Wide
9.3″
235 mm
Wheel
18″
rim diameter
Cars that come with 235/55R18
Similar-height sizes
Within 3% of 235/55R18, so your speedometer stays close.
| Size | Height | vs 235/55R18 | |
|---|---|---|---|
| 235/50R19 | 28.3″ | +0.3%needs 19″ wheels | Compare |
| 235/60R17 | 28.1″ | −0.3%needs 17″ wheels | Compare |
| 255/45R19 | 28.0″ | −0.5%needs 19″ wheels | Compare |
| 255/40R20 | 28.0″ | −0.5%needs 20″ wheels | Compare |
| 255/35R21 | 28.0″ | −0.5%needs 21″ wheels | Compare |
| 225/65R17 | 28.5″ | +1.2%needs 17″ wheels | Compare |
| 275/35R21 | 28.6″ | +1.4%needs 21″ wheels | Compare |
| 225/55R18 | 27.7″ | −1.5% | Compare |
How 235/55R18 is measured
| Measurement | Inches | Millimetres |
|---|---|---|
| Overall height (diameter) | 28.18 | 716 |
| Tread width | 9.25 | 235 |
| Sidewall height | 5.09 | 129 |
| Distance per turn (circumference) | 88.5 | 2248 |
| Turns per mile | 716 | |
The first number (235) 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.