Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-17 | 145/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.99 (634.8) | 26.13 (663.8) | 1.14 (29) 4.6% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 78.52 (1994.28) | 82.1 (2085.39) | 3.59 (91.11) 4.6% |
| Sidewall Height inches (mm) | 4 (101.5) | 4.57 (116) | 0.57 (14.5) 14.3% |
| Revolutions per mile (km) | 806.98 (501.43) | 771.72 (479.53) | -35.26 (-21.91) -4.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.91 mph (33.66 km/h) |
| 25 mph (40.23 km/h) | 26.14 mph (42.07 km/h) |
| 30 mph (48.28 km/h) | 31.37 mph (50.49 km/h) |
| 35 mph (56.33 km/h) | 36.6 mph (58.9 km/h) |
| 40 mph (64.37 km/h) | 41.83 mph (67.31 km/h) |
| 45 mph (72.42 km/h) | 47.06 mph (75.73 km/h) |
| 50 mph (80.47 km/h) | 52.28 mph (84.14 km/h) |
| 55 mph (88.51 km/h) | 57.51 mph (92.56 km/h) |
| 60 mph (96.56 km/h) | 62.74 mph (100.97 km/h) |
| 65 mph (104.61 km/h) | 67.97 mph (109.39 km/h) |
| 70 mph (112.65 km/h) | 73.2 mph (117.8 km/h) |
| 75 mph (120.7 km/h) | 78.43 mph (126.22 km/h) |
| 80 mph (128.75 km/h) | 83.65 mph (134.63 km/h) |
| 85 mph (136.79 km/h) | 88.88 mph (143.04 km/h) |
| 90 mph (144.84 km/h) | 94.11 mph (151.46 km/h) |
| 95 mph (152.89 km/h) | 99.34 mph (159.87 km/h) |
| 100 mph (160.93 km/h) | 104.57 mph (168.29 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1964 | 2281 | 2457 | 2566 | 2683 | 2766 | 2858 | 2967 | 3117 | 3268 | 3435 | 3568 | 3811 | 4078 | 4287 | 4421 | 4496 | 4772 | 5156 | 5992 |
Better Fuel Economy Factory Ratios Increased Power
