Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/55-20 | 275/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.18 (766.5) | 31.91 (810.5) | 1.73 (44) 5.7% |
| Width inches (mm) | 9.25 (235) | 10.83 (275) | 1.57 (40) 17% |
| Circum. inches (mm) | 94.8 (2408.03) | 100.25 (2546.26) | 5.44 (138.23) 5.7% |
| Sidewall Height inches (mm) | 5.09 (129.25) | 5.95 (151.25) | 0.87 (22) 17% |
| Revolutions per mile (km) | 668.32 (415.28) | 632.04 (392.73) | -36.28 (-22.54) -5.4% |
275/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.15 mph (34.03 km/h) |
| 25 mph (40.23 km/h) | 26.44 mph (42.54 km/h) |
| 30 mph (48.28 km/h) | 31.72 mph (51.05 km/h) |
| 35 mph (56.33 km/h) | 37.01 mph (59.56 km/h) |
| 40 mph (64.37 km/h) | 42.3 mph (68.07 km/h) |
| 45 mph (72.42 km/h) | 47.58 mph (76.58 km/h) |
| 50 mph (80.47 km/h) | 52.87 mph (85.09 km/h) |
| 55 mph (88.51 km/h) | 58.16 mph (93.6 km/h) |
| 60 mph (96.56 km/h) | 63.44 mph (102.1 km/h) |
| 65 mph (104.61 km/h) | 68.73 mph (110.61 km/h) |
| 70 mph (112.65 km/h) | 74.02 mph (119.12 km/h) |
| 75 mph (120.7 km/h) | 79.31 mph (127.63 km/h) |
| 80 mph (128.75 km/h) | 84.59 mph (136.14 km/h) |
| 85 mph (136.79 km/h) | 89.88 mph (144.65 km/h) |
| 90 mph (144.84 km/h) | 95.17 mph (153.16 km/h) |
| 95 mph (152.89 km/h) | 100.45 mph (161.66 km/h) |
| 100 mph (160.93 km/h) | 105.74 mph (170.17 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1608 | 1869 | 2012 | 2101 | 2197 | 2265 | 2341 | 2430 | 2553 | 2676 | 2813 | 2923 | 3121 | 3340 | 3511 | 3621 | 3682 | 3908 | 4223 | 4907 |
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