Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/80-15 | 445/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.19 (589) | 29.02 (737) | 5.83 (148) 25.1% |
| Width inches (mm) | 5.12 (130) | 17.52 (445) | 12.4 (315) 242.3% |
| Circum. inches (mm) | 72.85 (1850.4) | 91.16 (2315.35) | 18.31 (464.96) 25.1% |
| Sidewall Height inches (mm) | 4.09 (104) | 7.01 (178) | 2.91 (74) 71.2% |
| Revolutions per mile (km) | 869.73 (540.42) | 695.07 (431.9) | -174.65 (-108.52) -20.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.03 mph (40.27 km/h) |
| 25 mph (40.23 km/h) | 31.28 mph (50.34 km/h) |
| 30 mph (48.28 km/h) | 37.54 mph (60.41 km/h) |
| 35 mph (56.33 km/h) | 43.79 mph (70.48 km/h) |
| 40 mph (64.37 km/h) | 50.05 mph (80.55 km/h) |
| 45 mph (72.42 km/h) | 56.31 mph (90.62 km/h) |
| 50 mph (80.47 km/h) | 62.56 mph (100.69 km/h) |
| 55 mph (88.51 km/h) | 68.82 mph (110.76 km/h) |
| 60 mph (96.56 km/h) | 75.08 mph (120.82 km/h) |
| 65 mph (104.61 km/h) | 81.33 mph (130.89 km/h) |
| 70 mph (112.65 km/h) | 87.59 mph (140.96 km/h) |
| 75 mph (120.7 km/h) | 93.85 mph (151.03 km/h) |
| 80 mph (128.75 km/h) | 100.1 mph (161.1 km/h) |
| 85 mph (136.79 km/h) | 106.36 mph (171.17 km/h) |
| 90 mph (144.84 km/h) | 112.61 mph (181.24 km/h) |
| 95 mph (152.89 km/h) | 118.87 mph (191.3 km/h) |
| 100 mph (160.93 km/h) | 125.13 mph (201.37 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1769 | 2055 | 2213 | 2311 | 2416 | 2491 | 2574 | 2672 | 2808 | 2943 | 3094 | 3214 | 3432 | 3673 | 3861 | 3982 | 4049 | 4298 | 4644 | 5397 |
Better Fuel Economy Factory Ratios Increased Power
