Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/30-20 | 405/30-26 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 35.57 (903.4) | 10.49 (266.4) 41.8% |
| Width inches (mm) | 8.46 (215) | 15.94 (405) | 7.48 (190) 88.4% |
| Circum. inches (mm) | 78.79 (2001.19) | 111.74 (2838.11) | 32.95 (836.92) 41.8% |
| Sidewall Height inches (mm) | 2.54 (64.5) | 4.78 (121.5) | 2.24 (57) 88.4% |
| Revolutions per mile (km) | 804.19 (499.7) | 567.05 (352.35) | -237.14 (-147.35) -29.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.36 mph (45.65 km/h) |
| 25 mph (40.23 km/h) | 35.46 mph (57.06 km/h) |
| 30 mph (48.28 km/h) | 42.55 mph (68.47 km/h) |
| 35 mph (56.33 km/h) | 49.64 mph (79.88 km/h) |
| 40 mph (64.37 km/h) | 56.73 mph (91.3 km/h) |
| 45 mph (72.42 km/h) | 63.82 mph (102.71 km/h) |
| 50 mph (80.47 km/h) | 70.91 mph (114.12 km/h) |
| 55 mph (88.51 km/h) | 78 mph (125.53 km/h) |
| 60 mph (96.56 km/h) | 85.09 mph (136.94 km/h) |
| 65 mph (104.61 km/h) | 92.18 mph (148.36 km/h) |
| 70 mph (112.65 km/h) | 99.27 mph (159.77 km/h) |
| 75 mph (120.7 km/h) | 106.37 mph (171.18 km/h) |
| 80 mph (128.75 km/h) | 113.46 mph (182.59 km/h) |
| 85 mph (136.79 km/h) | 120.55 mph (194 km/h) |
| 90 mph (144.84 km/h) | 127.64 mph (205.42 km/h) |
| 95 mph (152.89 km/h) | 134.73 mph (216.83 km/h) |
| 100 mph (160.93 km/h) | 141.82 mph (228.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1443 | 1676 | 1805 | 1885 | 1971 | 2033 | 2100 | 2180 | 2290 | 2401 | 2524 | 2622 | 2800 | 2997 | 3150 | 3248 | 3304 | 3506 | 3789 | 4403 |
Better Fuel Economy Factory Ratios Increased Power
