Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-17 | 145/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.13 (663.8) | 24.99 (634.8) | -1.14 (-29) -4.4% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 82.1 (2085.39) | 78.52 (1994.28) | -3.59 (-91.11) -4.4% |
| Sidewall Height inches (mm) | 4.57 (116) | 4 (101.5) | -0.57 (-14.5) -12.5% |
| Revolutions per mile (km) | 771.72 (479.53) | 806.98 (501.43) | 35.26 (21.91) 4.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.13 mph (30.78 km/h) |
| 25 mph (40.23 km/h) | 23.91 mph (38.48 km/h) |
| 30 mph (48.28 km/h) | 28.69 mph (46.17 km/h) |
| 35 mph (56.33 km/h) | 33.47 mph (53.87 km/h) |
| 40 mph (64.37 km/h) | 38.25 mph (61.56 km/h) |
| 45 mph (72.42 km/h) | 43.03 mph (69.26 km/h) |
| 50 mph (80.47 km/h) | 47.82 mph (76.95 km/h) |
| 55 mph (88.51 km/h) | 52.6 mph (84.65 km/h) |
| 60 mph (96.56 km/h) | 57.38 mph (92.34 km/h) |
| 65 mph (104.61 km/h) | 62.16 mph (100.04 km/h) |
| 70 mph (112.65 km/h) | 66.94 mph (107.73 km/h) |
| 75 mph (120.7 km/h) | 71.72 mph (115.43 km/h) |
| 80 mph (128.75 km/h) | 76.5 mph (123.12 km/h) |
| 85 mph (136.79 km/h) | 81.29 mph (130.82 km/h) |
| 90 mph (144.84 km/h) | 86.07 mph (138.51 km/h) |
| 95 mph (152.89 km/h) | 90.85 mph (146.21 km/h) |
| 100 mph (160.93 km/h) | 95.63 mph (153.9 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2054 | 2386 | 2569 | 2683 | 2805 | 2893 | 2989 | 3102 | 3260 | 3417 | 3592 | 3731 | 3985 | 4265 | 4483 | 4623 | 4701 | 4990 | 5392 | 6266 |
Better Fuel Economy Factory Ratios Increased Power
