245/75R18 in inches
A 245/75R18 tire stands 32.5 inches tall and is 9.6 inches wide. It fits an 18-inch wheel. People usually call it a 32-inch tire.
Tall
32.5″
825 mm
Wide
9.6″
245 mm
Wheel
18″
rim diameter
Cars that come with 245/75R18
Similar-height sizes
Within 3% of 245/75R18, so your speedometer stays close.
| Size | Height | vs 245/75R18 | |
|---|---|---|---|
| 265/50R22 | 32.4″ | −0.1%needs 22″ wheels | Compare |
| 265/60R20 | 32.5″ | +0.2%needs 20″ wheels | Compare |
| 285/65R18 | 32.6″ | +0.4% | Compare |
| 265/70R18 | 32.6″ | +0.4% | Compare |
| 285/70R17 | 32.7″ | +0.7%needs 17″ wheels | Compare |
| 275/50R22 | 32.8″ | +1.1%needs 22″ wheels | Compare |
| 285/75R16 | 32.8″ | +1.1%needs 16″ wheels | Compare |
| 285/45R22 | 32.1″ | −1.1%needs 22″ wheels | Compare |
How 245/75R18 is measured
| Measurement | Inches | Millimetres |
|---|---|---|
| Overall height (diameter) | 32.47 | 825 |
| Tread width | 9.65 | 245 |
| Sidewall height | 7.23 | 184 |
| Distance per turn (circumference) | 102.0 | 2591 |
| Turns per mile | 621 | |
The first number (245) is the width in millimetres. The second (75) means the sidewall is 75% as tall as the tire is wide. The last (18) is the wheel size in inches. More on reading a tire size.