Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-17 | 175/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.99 (634.8) | 26.65 (676.8) | 1.65 (42) 6.6% |
| Width inches (mm) | 5.71 (145) | 6.89 (175) | 1.18 (30) 20.7% |
| Circum. inches (mm) | 78.52 (1994.28) | 83.71 (2126.23) | 5.19 (131.95) 6.6% |
| Sidewall Height inches (mm) | 4 (101.5) | 4.82 (122.5) | 0.83 (21) 20.7% |
| Revolutions per mile (km) | 806.98 (501.43) | 756.9 (470.32) | -50.08 (-31.12) -6.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.32 mph (34.32 km/h) |
| 25 mph (40.23 km/h) | 26.65 mph (42.9 km/h) |
| 30 mph (48.28 km/h) | 31.98 mph (51.47 km/h) |
| 35 mph (56.33 km/h) | 37.32 mph (60.05 km/h) |
| 40 mph (64.37 km/h) | 42.65 mph (68.63 km/h) |
| 45 mph (72.42 km/h) | 47.98 mph (77.21 km/h) |
| 50 mph (80.47 km/h) | 53.31 mph (85.79 km/h) |
| 55 mph (88.51 km/h) | 58.64 mph (94.37 km/h) |
| 60 mph (96.56 km/h) | 63.97 mph (102.95 km/h) |
| 65 mph (104.61 km/h) | 69.3 mph (111.53 km/h) |
| 70 mph (112.65 km/h) | 74.63 mph (120.11 km/h) |
| 75 mph (120.7 km/h) | 79.96 mph (128.69 km/h) |
| 80 mph (128.75 km/h) | 85.29 mph (137.27 km/h) |
| 85 mph (136.79 km/h) | 90.62 mph (145.85 km/h) |
| 90 mph (144.84 km/h) | 95.95 mph (154.42 km/h) |
| 95 mph (152.89 km/h) | 101.29 mph (163 km/h) |
| 100 mph (160.93 km/h) | 106.62 mph (171.58 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1926 | 2238 | 2410 | 2516 | 2631 | 2713 | 2803 | 2910 | 3057 | 3205 | 3369 | 3500 | 3738 | 4000 | 4205 | 4336 | 4410 | 4680 | 5057 | 5877 |
Better Fuel Economy Factory Ratios Increased Power
