Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/30-20 | 400/45-26 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 40.17 (1020.4) | 15.09 (383.4) 60.2% |
| Width inches (mm) | 8.46 (215) | 15.75 (400) | 7.28 (185) 86% |
| Circum. inches (mm) | 78.79 (2001.19) | 126.21 (3205.68) | 47.42 (1204.49) 60.2% |
| Sidewall Height inches (mm) | 2.54 (64.5) | 7.09 (180) | 4.55 (115.5) 179.1% |
| Revolutions per mile (km) | 804.19 (499.7) | 502.03 (311.95) | -302.16 (-187.76) -37.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 32.04 mph (51.56 km/h) |
| 25 mph (40.23 km/h) | 40.05 mph (64.45 km/h) |
| 30 mph (48.28 km/h) | 48.06 mph (77.34 km/h) |
| 35 mph (56.33 km/h) | 56.07 mph (90.23 km/h) |
| 40 mph (64.37 km/h) | 64.08 mph (103.12 km/h) |
| 45 mph (72.42 km/h) | 72.08 mph (116.01 km/h) |
| 50 mph (80.47 km/h) | 80.09 mph (128.9 km/h) |
| 55 mph (88.51 km/h) | 88.1 mph (141.79 km/h) |
| 60 mph (96.56 km/h) | 96.11 mph (154.68 km/h) |
| 65 mph (104.61 km/h) | 104.12 mph (167.57 km/h) |
| 70 mph (112.65 km/h) | 112.13 mph (180.46 km/h) |
| 75 mph (120.7 km/h) | 120.14 mph (193.35 km/h) |
| 80 mph (128.75 km/h) | 128.15 mph (206.24 km/h) |
| 85 mph (136.79 km/h) | 136.16 mph (219.13 km/h) |
| 90 mph (144.84 km/h) | 144.17 mph (232.02 km/h) |
| 95 mph (152.89 km/h) | 152.18 mph (244.91 km/h) |
| 100 mph (160.93 km/h) | 160.19 mph (257.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1278 | 1484 | 1598 | 1669 | 1745 | 1799 | 1859 | 1930 | 2028 | 2126 | 2234 | 2321 | 2479 | 2653 | 2789 | 2876 | 2925 | 3104 | 3354 | 3898 |
Better Fuel Economy Factory Ratios Increased Power
