Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/80-15 | 145/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.87 (581) | 22.42 (569.5) | -0.45 (-11.5) -2% |
| Width inches (mm) | 4.92 (125) | 5.71 (145) | 0.79 (20) 16% |
| Circum. inches (mm) | 71.86 (1825.27) | 70.44 (1789.14) | -1.42 (-36.13) -2% |
| Sidewall Height inches (mm) | 3.94 (100) | 3.71 (94.25) | -0.23 (-5.75) -5.7% |
| Revolutions per mile (km) | 881.7 (547.86) | 899.51 (558.93) | 17.8 (11.06) 2% |
145/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.6 mph (31.55 km/h) |
| 25 mph (40.23 km/h) | 24.51 mph (39.44 km/h) |
| 30 mph (48.28 km/h) | 29.41 mph (47.32 km/h) |
| 35 mph (56.33 km/h) | 34.31 mph (55.21 km/h) |
| 40 mph (64.37 km/h) | 39.21 mph (63.1 km/h) |
| 45 mph (72.42 km/h) | 44.11 mph (70.99 km/h) |
| 50 mph (80.47 km/h) | 49.01 mph (78.87 km/h) |
| 55 mph (88.51 km/h) | 53.91 mph (86.76 km/h) |
| 60 mph (96.56 km/h) | 58.81 mph (94.65 km/h) |
| 65 mph (104.61 km/h) | 63.71 mph (102.54 km/h) |
| 70 mph (112.65 km/h) | 68.61 mph (110.42 km/h) |
| 75 mph (120.7 km/h) | 73.52 mph (118.31 km/h) |
| 80 mph (128.75 km/h) | 78.42 mph (126.2 km/h) |
| 85 mph (136.79 km/h) | 83.32 mph (134.09 km/h) |
| 90 mph (144.84 km/h) | 88.22 mph (141.97 km/h) |
| 95 mph (152.89 km/h) | 93.12 mph (149.86 km/h) |
| 100 mph (160.93 km/h) | 98.02 mph (157.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2289 | 2659 | 2864 | 2990 | 3127 | 3224 | 3331 | 3458 | 3633 | 3809 | 4003 | 4159 | 4442 | 4753 | 4997 | 5153 | 5241 | 5562 | 6010 | 6984 |
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