Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 415/40-30 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 43.07 (1094) | 5.63 (143) 15% |
| Width inches (mm) | 12.4 (315) | 16.34 (415) | 3.94 (100) 31.7% |
| Circum. inches (mm) | 117.62 (2987.65) | 135.31 (3436.9) | 17.69 (449.25) 15% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 6.54 (166) | 2.81 (71.5) 75.7% |
| Revolutions per mile (km) | 538.66 (334.71) | 468.25 (290.96) | -70.41 (-43.75) -13.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.01 mph (37.03 km/h) |
| 25 mph (40.23 km/h) | 28.76 mph (46.28 km/h) |
| 30 mph (48.28 km/h) | 34.51 mph (55.54 km/h) |
| 35 mph (56.33 km/h) | 40.26 mph (64.8 km/h) |
| 40 mph (64.37 km/h) | 46.01 mph (74.05 km/h) |
| 45 mph (72.42 km/h) | 51.77 mph (83.31 km/h) |
| 50 mph (80.47 km/h) | 57.52 mph (92.57 km/h) |
| 55 mph (88.51 km/h) | 63.27 mph (101.82 km/h) |
| 60 mph (96.56 km/h) | 69.02 mph (111.08 km/h) |
| 65 mph (104.61 km/h) | 74.77 mph (120.34 km/h) |
| 70 mph (112.65 km/h) | 80.53 mph (129.59 km/h) |
| 75 mph (120.7 km/h) | 86.28 mph (138.85 km/h) |
| 80 mph (128.75 km/h) | 92.03 mph (148.11 km/h) |
| 85 mph (136.79 km/h) | 97.78 mph (157.36 km/h) |
| 90 mph (144.84 km/h) | 103.53 mph (166.62 km/h) |
| 95 mph (152.89 km/h) | 109.28 mph (175.88 km/h) |
| 100 mph (160.93 km/h) | 115.04 mph (185.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1192 | 1384 | 1491 | 1557 | 1628 | 1678 | 1734 | 1800 | 1891 | 1983 | 2084 | 2165 | 2312 | 2475 | 2601 | 2682 | 2728 | 2895 | 3129 | 3636 |
Better Fuel Economy Factory Ratios Increased Power
