Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-17 | 145/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.54 (648.8) | 26.13 (663.8) | 0.59 (15) 2.3% |
| Width inches (mm) | 6.1 (155) | 5.71 (145) | -0.39 (-10) -6.5% |
| Circum. inches (mm) | 80.25 (2038.27) | 82.1 (2085.39) | 1.86 (47.12) 2.3% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 4.57 (116) | 0.3 (7.5) 6.9% |
| Revolutions per mile (km) | 789.57 (490.61) | 771.72 (479.53) | -17.84 (-11.09) -2.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.46 mph (32.93 km/h) |
| 25 mph (40.23 km/h) | 25.58 mph (41.16 km/h) |
| 30 mph (48.28 km/h) | 30.69 mph (49.4 km/h) |
| 35 mph (56.33 km/h) | 35.81 mph (57.63 km/h) |
| 40 mph (64.37 km/h) | 40.92 mph (65.86 km/h) |
| 45 mph (72.42 km/h) | 46.04 mph (74.09 km/h) |
| 50 mph (80.47 km/h) | 51.16 mph (82.33 km/h) |
| 55 mph (88.51 km/h) | 56.27 mph (90.56 km/h) |
| 60 mph (96.56 km/h) | 61.39 mph (98.79 km/h) |
| 65 mph (104.61 km/h) | 66.5 mph (107.03 km/h) |
| 70 mph (112.65 km/h) | 71.62 mph (115.26 km/h) |
| 75 mph (120.7 km/h) | 76.73 mph (123.49 km/h) |
| 80 mph (128.75 km/h) | 81.85 mph (131.72 km/h) |
| 85 mph (136.79 km/h) | 86.97 mph (139.96 km/h) |
| 90 mph (144.84 km/h) | 92.08 mph (148.19 km/h) |
| 95 mph (152.89 km/h) | 97.2 mph (156.42 km/h) |
| 100 mph (160.93 km/h) | 102.31 mph (164.66 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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
