Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/60-17 | 275/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.52 (749.8) | 31.91 (810.5) | 2.39 (60.7) 8.1% |
| Width inches (mm) | 10.43 (265) | 10.83 (275) | 0.39 (10) 3.8% |
| Circum. inches (mm) | 92.74 (2355.57) | 100.25 (2546.26) | 7.51 (190.69) 8.1% |
| Sidewall Height inches (mm) | 6.26 (159) | 5.95 (151.25) | -0.31 (-7.75) -4.9% |
| Revolutions per mile (km) | 683.21 (424.53) | 632.04 (392.73) | -51.17 (-31.79) -7.5% |
275/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.62 mph (34.79 km/h) |
| 25 mph (40.23 km/h) | 27.02 mph (43.49 km/h) |
| 30 mph (48.28 km/h) | 32.43 mph (52.19 km/h) |
| 35 mph (56.33 km/h) | 37.83 mph (60.89 km/h) |
| 40 mph (64.37 km/h) | 43.24 mph (69.59 km/h) |
| 45 mph (72.42 km/h) | 48.64 mph (78.28 km/h) |
| 50 mph (80.47 km/h) | 54.05 mph (86.98 km/h) |
| 55 mph (88.51 km/h) | 59.45 mph (95.68 km/h) |
| 60 mph (96.56 km/h) | 64.86 mph (104.38 km/h) |
| 65 mph (104.61 km/h) | 70.26 mph (113.08 km/h) |
| 70 mph (112.65 km/h) | 75.67 mph (121.77 km/h) |
| 75 mph (120.7 km/h) | 81.07 mph (130.47 km/h) |
| 80 mph (128.75 km/h) | 86.48 mph (139.17 km/h) |
| 85 mph (136.79 km/h) | 91.88 mph (147.87 km/h) |
| 90 mph (144.84 km/h) | 97.29 mph (156.57 km/h) |
| 95 mph (152.89 km/h) | 102.69 mph (165.27 km/h) |
| 100 mph (160.93 km/h) | 108.1 mph (173.96 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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