Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/80-17 | 125/78-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.87 (631.8) | 24.68 (626.8) | -0.2 (-5) -0.8% |
| Width inches (mm) | 4.92 (125) | 4.92 (125) | 0 (0) 0% |
| Circum. inches (mm) | 78.14 (1984.86) | 77.53 (1969.15) | -0.62 (-15.71) -0.8% |
| Sidewall Height inches (mm) | 3.94 (100) | 3.84 (97.5) | -0.1 (-2.5) -2.5% |
| Revolutions per mile (km) | 810.81 (503.81) | 817.28 (507.83) | 6.47 (4.02) 0.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.84 mph (31.93 km/h) |
| 25 mph (40.23 km/h) | 24.8 mph (39.92 km/h) |
| 30 mph (48.28 km/h) | 29.76 mph (47.9 km/h) |
| 35 mph (56.33 km/h) | 34.72 mph (55.88 km/h) |
| 40 mph (64.37 km/h) | 39.68 mph (63.86 km/h) |
| 45 mph (72.42 km/h) | 44.64 mph (71.85 km/h) |
| 50 mph (80.47 km/h) | 49.6 mph (79.83 km/h) |
| 55 mph (88.51 km/h) | 54.56 mph (87.81 km/h) |
| 60 mph (96.56 km/h) | 59.53 mph (95.8 km/h) |
| 65 mph (104.61 km/h) | 64.49 mph (103.78 km/h) |
| 70 mph (112.65 km/h) | 69.45 mph (111.76 km/h) |
| 75 mph (120.7 km/h) | 74.41 mph (119.75 km/h) |
| 80 mph (128.75 km/h) | 79.37 mph (127.73 km/h) |
| 85 mph (136.79 km/h) | 84.33 mph (135.71 km/h) |
| 90 mph (144.84 km/h) | 89.29 mph (143.69 km/h) |
| 95 mph (152.89 km/h) | 94.25 mph (151.68 km/h) |
| 100 mph (160.93 km/h) | 99.21 mph (159.66 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2080 | 2416 | 2602 | 2717 | 2841 | 2929 | 3027 | 3142 | 3301 | 3460 | 3637 | 3779 | 4036 | 4319 | 4540 | 4682 | 4761 | 5054 | 5461 | 6346 |
Better Fuel Economy Factory Ratios Increased Power
