275/55R20 in inches
A 275/55R20 tire stands 31.9 inches tall and is 10.8 inches wide. It fits a 20-inch wheel. People usually call it a 32-inch tire.
Tall
31.9″
810 mm
Wide
10.8″
275 mm
Wheel
20″
rim diameter
Cars that come with 275/55R20
- 2014–2018 Chevrolet Silverado 1500LT (20-inch option), LTZ (20-inch option), High Country…
- 2015–2020 Ford F-150XL (20-inch option), XLT, Lariat…
- 2015–2019 GMC Sierra 1500SLE 20-inch, SLT 20-inch, Elevation Edition (2018)…
- 2021–2025 Jeep WranglerUnlimited High Altitude, Unlimited High Altitude 4xe, Unlimited Sahara 4xe…
- 2019–2026 Ram 1500Tradesman, Tradesman HFE, Big Horn…
- 2015–2021 Toyota TundraLimited, Platinum, 1794 Edition…
Similar-height sizes
Within 3% of 275/55R20, so your speedometer stays close.
| Size | Height | vs 275/55R20 | |
|---|---|---|---|
| 255/60R20 | 32.0″ | +0.4% | Compare |
| 255/70R18 | 32.1″ | +0.5%needs 18″ wheels | Compare |
| 255/75R17 | 32.1″ | +0.5%needs 17″ wheels | Compare |
| 275/65R18 | 32.1″ | +0.5%needs 18″ wheels | Compare |
| 275/45R22 | 31.7″ | −0.5%needs 22″ wheels | Compare |
| 285/45R22 | 32.1″ | +0.6%needs 22″ wheels | Compare |
| 265/75R16 | 31.6″ | −0.8%needs 16″ wheels | Compare |
| 265/70R17 | 31.6″ | −1.0%needs 17″ wheels | Compare |
How 275/55R20 is measured
| Measurement | Inches | Millimetres |
|---|---|---|
| Overall height (diameter) | 31.91 | 810 |
| Tread width | 10.83 | 275 |
| Sidewall height | 5.95 | 151 |
| Distance per turn (circumference) | 100.2 | 2546 |
| Turns per mile | 632 | |
The first number (275) is the width in millimetres. The second (55) means the sidewall is 55% as tall as the tire is wide. The last (20) is the wheel size in inches. More on reading a tire size.