Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/90-16 | 125/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.28 (667.4) | 24.87 (631.8) | -1.4 (-35.6) -5.3% |
| Width inches (mm) | 5.71 (145) | 4.92 (125) | -0.79 (-20) -13.8% |
| Circum. inches (mm) | 82.55 (2096.7) | 78.14 (1984.86) | -4.4 (-111.84) -5.3% |
| Sidewall Height inches (mm) | 5.14 (130.5) | 3.94 (100) | -1.2 (-30.5) -23.4% |
| Revolutions per mile (km) | 767.56 (476.94) | 810.81 (503.81) | 43.25 (26.87) 5.6% |
125/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.93 mph (30.47 km/h) |
| 25 mph (40.23 km/h) | 23.67 mph (38.09 km/h) |
| 30 mph (48.28 km/h) | 28.4 mph (45.71 km/h) |
| 35 mph (56.33 km/h) | 33.13 mph (53.32 km/h) |
| 40 mph (64.37 km/h) | 37.87 mph (60.94 km/h) |
| 45 mph (72.42 km/h) | 42.6 mph (68.56 km/h) |
| 50 mph (80.47 km/h) | 47.33 mph (76.18 km/h) |
| 55 mph (88.51 km/h) | 52.07 mph (83.79 km/h) |
| 60 mph (96.56 km/h) | 56.8 mph (91.41 km/h) |
| 65 mph (104.61 km/h) | 61.53 mph (99.03 km/h) |
| 70 mph (112.65 km/h) | 66.27 mph (106.65 km/h) |
| 75 mph (120.7 km/h) | 71 mph (114.26 km/h) |
| 80 mph (128.75 km/h) | 75.73 mph (121.88 km/h) |
| 85 mph (136.79 km/h) | 80.47 mph (129.5 km/h) |
| 90 mph (144.84 km/h) | 85.2 mph (137.12 km/h) |
| 95 mph (152.89 km/h) | 89.93 mph (144.73 km/h) |
| 100 mph (160.93 km/h) | 94.67 mph (152.35 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 |
Better Fuel Economy Factory Ratios Increased Power
