Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/50-20 | 275/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.04 (763) | 30.83 (783) | 0.79 (20) 2.6% |
| Width inches (mm) | 10.04 (255) | 10.83 (275) | 0.79 (20) 7.8% |
| Circum. inches (mm) | 94.37 (2397.04) | 96.85 (2459.87) | 2.47 (62.83) 2.6% |
| Sidewall Height inches (mm) | 5.02 (127.5) | 5.41 (137.5) | 0.39 (10) 7.8% |
| Revolutions per mile (km) | 671.39 (417.18) | 654.24 (406.53) | -17.15 (-10.66) -2.6% |
275/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.52 mph (33.03 km/h) |
| 25 mph (40.23 km/h) | 25.66 mph (41.29 km/h) |
| 30 mph (48.28 km/h) | 30.79 mph (49.55 km/h) |
| 35 mph (56.33 km/h) | 35.92 mph (57.8 km/h) |
| 40 mph (64.37 km/h) | 41.05 mph (66.06 km/h) |
| 45 mph (72.42 km/h) | 46.18 mph (74.32 km/h) |
| 50 mph (80.47 km/h) | 51.31 mph (82.58 km/h) |
| 55 mph (88.51 km/h) | 56.44 mph (90.83 km/h) |
| 60 mph (96.56 km/h) | 61.57 mph (99.09 km/h) |
| 65 mph (104.61 km/h) | 66.7 mph (107.35 km/h) |
| 70 mph (112.65 km/h) | 71.83 mph (115.61 km/h) |
| 75 mph (120.7 km/h) | 76.97 mph (123.86 km/h) |
| 80 mph (128.75 km/h) | 82.1 mph (132.12 km/h) |
| 85 mph (136.79 km/h) | 87.23 mph (140.38 km/h) |
| 90 mph (144.84 km/h) | 92.36 mph (148.64 km/h) |
| 95 mph (152.89 km/h) | 97.49 mph (156.9 km/h) |
| 100 mph (160.93 km/h) | 102.62 mph (165.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1665 | 1934 | 2083 | 2175 | 2274 | 2345 | 2423 | 2515 | 2643 | 2770 | 2912 | 3025 | 3231 | 3457 | 3634 | 3748 | 3812 | 4045 | 4371 | 5080 |
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