Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-15 | 145/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.99 (584) | 24.13 (613) | 1.14 (29) 5% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 72.23 (1834.69) | 75.82 (1925.8) | 3.59 (91.11) 5% |
| Sidewall Height inches (mm) | 4 (101.5) | 4.57 (116) | 0.57 (14.5) 14.3% |
| Revolutions per mile (km) | 877.17 (545.05) | 835.68 (519.26) | -41.5 (-25.79) -4.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.99 mph (33.79 km/h) |
| 25 mph (40.23 km/h) | 26.24 mph (42.23 km/h) |
| 30 mph (48.28 km/h) | 31.49 mph (50.68 km/h) |
| 35 mph (56.33 km/h) | 36.74 mph (59.12 km/h) |
| 40 mph (64.37 km/h) | 41.99 mph (67.57 km/h) |
| 45 mph (72.42 km/h) | 47.23 mph (76.02 km/h) |
| 50 mph (80.47 km/h) | 52.48 mph (84.46 km/h) |
| 55 mph (88.51 km/h) | 57.73 mph (92.91 km/h) |
| 60 mph (96.56 km/h) | 62.98 mph (101.36 km/h) |
| 65 mph (104.61 km/h) | 68.23 mph (109.8 km/h) |
| 70 mph (112.65 km/h) | 73.48 mph (118.25 km/h) |
| 75 mph (120.7 km/h) | 78.72 mph (126.69 km/h) |
| 80 mph (128.75 km/h) | 83.97 mph (135.14 km/h) |
| 85 mph (136.79 km/h) | 89.22 mph (143.59 km/h) |
| 90 mph (144.84 km/h) | 94.47 mph (152.03 km/h) |
| 95 mph (152.89 km/h) | 99.72 mph (160.48 km/h) |
| 100 mph (160.93 km/h) | 104.97 mph (168.93 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
