Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 38/15.5-20 | 41/14.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.99 (965.04) | 40.86 (1037.92) | 2.87 (72.88) 7.6% |
| Width inches (mm) | 15.51 (394) | 14.49 (368) | -1.02 (-26) -6.6% |
| Circum. inches (mm) | 119.36 (3031.76) | 128.37 (3260.72) | 9.01 (228.96) 7.6% |
| Sidewall Height inches (mm) | 9 (228.52) | 10.43 (264.96) | 1.43 (36.44) 15.9% |
| Revolutions per mile (km) | 530.83 (329.84) | 493.55 (306.68) | -37.27 (-23.16) -7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.51 mph (34.62 km/h) |
| 25 mph (40.23 km/h) | 26.89 mph (43.27 km/h) |
| 30 mph (48.28 km/h) | 32.27 mph (51.93 km/h) |
| 35 mph (56.33 km/h) | 37.64 mph (60.58 km/h) |
| 40 mph (64.37 km/h) | 43.02 mph (69.24 km/h) |
| 45 mph (72.42 km/h) | 48.4 mph (77.89 km/h) |
| 50 mph (80.47 km/h) | 53.78 mph (86.54 km/h) |
| 55 mph (88.51 km/h) | 59.15 mph (95.2 km/h) |
| 60 mph (96.56 km/h) | 64.53 mph (103.85 km/h) |
| 65 mph (104.61 km/h) | 69.91 mph (112.51 km/h) |
| 70 mph (112.65 km/h) | 75.29 mph (121.16 km/h) |
| 75 mph (120.7 km/h) | 80.66 mph (129.82 km/h) |
| 80 mph (128.75 km/h) | 86.04 mph (138.47 km/h) |
| 85 mph (136.79 km/h) | 91.42 mph (147.13 km/h) |
| 90 mph (144.84 km/h) | 96.8 mph (155.78 km/h) |
| 95 mph (152.89 km/h) | 102.17 mph (164.43 km/h) |
| 100 mph (160.93 km/h) | 107.55 mph (173.09 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1256 | 1459 | 1571 | 1641 | 1716 | 1769 | 1828 | 1897 | 1994 | 2090 | 2197 | 2282 | 2437 | 2608 | 2742 | 2827 | 2875 | 3052 | 3298 | 3832 |
Better Fuel Economy Factory Ratios Increased Power
