Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/70-17 | 125/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.61 (599.8) | 24.87 (631.8) | 1.26 (32) 5.3% |
| Width inches (mm) | 4.72 (120) | 4.92 (125) | 0.2 (5) 4.2% |
| Circum. inches (mm) | 74.19 (1884.33) | 78.14 (1984.86) | 3.96 (100.53) 5.3% |
| Sidewall Height inches (mm) | 3.31 (84) | 3.94 (100) | 0.63 (16) 19% |
| Revolutions per mile (km) | 854.07 (530.69) | 810.81 (503.81) | -43.26 (-26.88) -5.1% |
125/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.07 mph (33.9 km/h) |
| 25 mph (40.23 km/h) | 26.33 mph (42.38 km/h) |
| 30 mph (48.28 km/h) | 31.6 mph (50.86 km/h) |
| 35 mph (56.33 km/h) | 36.87 mph (59.33 km/h) |
| 40 mph (64.37 km/h) | 42.13 mph (67.81 km/h) |
| 45 mph (72.42 km/h) | 47.4 mph (76.28 km/h) |
| 50 mph (80.47 km/h) | 52.67 mph (84.76 km/h) |
| 55 mph (88.51 km/h) | 57.93 mph (93.24 km/h) |
| 60 mph (96.56 km/h) | 63.2 mph (101.71 km/h) |
| 65 mph (104.61 km/h) | 68.47 mph (110.19 km/h) |
| 70 mph (112.65 km/h) | 73.73 mph (118.66 km/h) |
| 75 mph (120.7 km/h) | 79 mph (127.14 km/h) |
| 80 mph (128.75 km/h) | 84.27 mph (135.62 km/h) |
| 85 mph (136.79 km/h) | 89.53 mph (144.09 km/h) |
| 90 mph (144.84 km/h) | 94.8 mph (152.57 km/h) |
| 95 mph (152.89 km/h) | 100.07 mph (161.04 km/h) |
| 100 mph (160.93 km/h) | 105.34 mph (169.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2063 | 2397 | 2581 | 2696 | 2818 | 2906 | 3003 | 3117 | 3275 | 3433 | 3609 | 3749 | 4004 | 4285 | 4504 | 4645 | 4724 | 5014 | 5417 | 6295 |
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