Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/50-20 | 275/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.04 (763) | 31.91 (810.5) | 1.87 (47.5) 6.2% |
| Width inches (mm) | 10.04 (255) | 10.83 (275) | 0.79 (20) 7.8% |
| Circum. inches (mm) | 94.37 (2397.04) | 100.25 (2546.26) | 5.88 (149.23) 6.2% |
| Sidewall Height inches (mm) | 5.02 (127.5) | 5.95 (151.25) | 0.94 (23.75) 18.6% |
| Revolutions per mile (km) | 671.39 (417.18) | 632.04 (392.73) | -39.35 (-24.45) -5.9% |
275/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.25 mph (34.19 km/h) |
| 25 mph (40.23 km/h) | 26.56 mph (42.74 km/h) |
| 30 mph (48.28 km/h) | 31.87 mph (51.29 km/h) |
| 35 mph (56.33 km/h) | 37.18 mph (59.83 km/h) |
| 40 mph (64.37 km/h) | 42.49 mph (68.38 km/h) |
| 45 mph (72.42 km/h) | 47.8 mph (76.93 km/h) |
| 50 mph (80.47 km/h) | 53.11 mph (85.48 km/h) |
| 55 mph (88.51 km/h) | 58.42 mph (94.02 km/h) |
| 60 mph (96.56 km/h) | 63.74 mph (102.57 km/h) |
| 65 mph (104.61 km/h) | 69.05 mph (111.12 km/h) |
| 70 mph (112.65 km/h) | 74.36 mph (119.67 km/h) |
| 75 mph (120.7 km/h) | 79.67 mph (128.22 km/h) |
| 80 mph (128.75 km/h) | 84.98 mph (136.76 km/h) |
| 85 mph (136.79 km/h) | 90.29 mph (145.31 km/h) |
| 90 mph (144.84 km/h) | 95.6 mph (153.86 km/h) |
| 95 mph (152.89 km/h) | 100.91 mph (162.41 km/h) |
| 100 mph (160.93 km/h) | 106.23 mph (170.95 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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