275/65R18 in inches
A 275/65R18 tire stands 32.1 inches tall and is 10.8 inches wide. It fits an 18-inch wheel. People usually call it a 32-inch tire.
Tall
32.1″
815 mm
Wide
10.8″
275 mm
Wheel
18″
rim diameter
Cars that come with 275/65R18
- 2019–2026 Chevrolet Silverado 1500Custom Trail Boss, LT Trail Boss, WT (Z71 off-road 18-inch option, 2020+)…
- 2015–2020 Ford F-150XLT 4x4, Lariat 4x4, King Ranch 4x4…
- 2021–2026 Ford F-150XL 4x4, XLT 4x4, Lariat 4x4…
- 2019–2026 GMC Sierra 1500AT4, AT4X (2022-2024), AT4X AEV Edition (2023-2024)…
- 2019–2026 Ram 1500Tradesman, Big Horn, Lone Star (2019-2023)…
- 2015–2021 Toyota TundraSR5 TRD Off-Road, Limited TRD Off-Road, 1794 Edition TRD Off-Road…
Similar-height sizes
Within 3% of 275/65R18, so your speedometer stays close.
| Size | Height | vs 275/65R18 | |
|---|---|---|---|
| 255/75R17 | 32.1″ | −0.0%needs 17″ wheels | Compare |
| 255/70R18 | 32.1″ | −0.1% | Compare |
| 285/45R22 | 32.1″ | +0.1%needs 22″ wheels | Compare |
| 255/60R20 | 32.0″ | −0.1%needs 20″ wheels | Compare |
| 275/55R20 | 31.9″ | −0.5%needs 20″ wheels | Compare |
| 275/45R22 | 31.7″ | −1.0%needs 22″ wheels | Compare |
| 265/50R22 | 32.4″ | +1.1%needs 22″ wheels | Compare |
| 245/75R18 | 32.5″ | +1.2% | Compare |
How 275/65R18 is measured
| Measurement | Inches | Millimetres |
|---|---|---|
| Overall height (diameter) | 32.07 | 815 |
| Tread width | 10.83 | 275 |
| Sidewall height | 7.04 | 179 |
| Distance per turn (circumference) | 100.8 | 2559 |
| Turns per mile | 629 | |
The first number (275) is the width in millimetres. The second (65) means the sidewall is 65% as tall as the tire is wide. The last (18) is the wheel size in inches. More on reading a tire size.