Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-15 | 145/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.54 (598) | 24.13 (613) | 0.59 (15) 2.5% |
| Width inches (mm) | 6.1 (155) | 5.71 (145) | -0.39 (-10) -6.5% |
| Circum. inches (mm) | 73.96 (1878.67) | 75.82 (1925.8) | 1.86 (47.12) 2.5% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 4.57 (116) | 0.3 (7.5) 6.9% |
| Revolutions per mile (km) | 856.64 (532.29) | 835.68 (519.26) | -20.96 (-13.03) -2.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.5 mph (32.99 km/h) |
| 25 mph (40.23 km/h) | 25.63 mph (41.24 km/h) |
| 30 mph (48.28 km/h) | 30.75 mph (49.49 km/h) |
| 35 mph (56.33 km/h) | 35.88 mph (57.74 km/h) |
| 40 mph (64.37 km/h) | 41 mph (65.99 km/h) |
| 45 mph (72.42 km/h) | 46.13 mph (74.24 km/h) |
| 50 mph (80.47 km/h) | 51.25 mph (82.49 km/h) |
| 55 mph (88.51 km/h) | 56.38 mph (90.73 km/h) |
| 60 mph (96.56 km/h) | 61.51 mph (98.98 km/h) |
| 65 mph (104.61 km/h) | 66.63 mph (107.23 km/h) |
| 70 mph (112.65 km/h) | 71.76 mph (115.48 km/h) |
| 75 mph (120.7 km/h) | 76.88 mph (123.73 km/h) |
| 80 mph (128.75 km/h) | 82.01 mph (131.98 km/h) |
| 85 mph (136.79 km/h) | 87.13 mph (140.23 km/h) |
| 90 mph (144.84 km/h) | 92.26 mph (148.47 km/h) |
| 95 mph (152.89 km/h) | 97.38 mph (156.72 km/h) |
| 100 mph (160.93 km/h) | 102.51 mph (164.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2127 | 2471 | 2661 | 2778 | 2905 | 2995 | 3095 | 3213 | 3375 | 3538 | 3719 | 3864 | 4127 | 4416 | 4642 | 4787 | 4869 | 5167 | 5584 | 6489 |
Better Fuel Economy Factory Ratios Increased Power
