Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 405/30-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 31.57 (801.8) | 3.58 (90.9) 12.8% |
| Width inches (mm) | 13.98 (355) | 15.94 (405) | 1.97 (50) 14.1% |
| Circum. inches (mm) | 87.93 (2233.36) | 99.17 (2518.93) | 11.24 (285.57) 12.8% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 4.78 (121.5) | 1.29 (32.75) 36.9% |
| Revolutions per mile (km) | 720.59 (447.76) | 638.9 (396.99) | -81.69 (-50.76) -11.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.56 mph (36.3 km/h) |
| 25 mph (40.23 km/h) | 28.2 mph (45.38 km/h) |
| 30 mph (48.28 km/h) | 33.84 mph (54.45 km/h) |
| 35 mph (56.33 km/h) | 39.48 mph (63.53 km/h) |
| 40 mph (64.37 km/h) | 45.11 mph (72.61 km/h) |
| 45 mph (72.42 km/h) | 50.75 mph (81.68 km/h) |
| 50 mph (80.47 km/h) | 56.39 mph (90.76 km/h) |
| 55 mph (88.51 km/h) | 62.03 mph (99.83 km/h) |
| 60 mph (96.56 km/h) | 67.67 mph (108.91 km/h) |
| 65 mph (104.61 km/h) | 73.31 mph (117.98 km/h) |
| 70 mph (112.65 km/h) | 78.95 mph (127.06 km/h) |
| 75 mph (120.7 km/h) | 84.59 mph (136.13 km/h) |
| 80 mph (128.75 km/h) | 90.23 mph (145.21 km/h) |
| 85 mph (136.79 km/h) | 95.87 mph (154.29 km/h) |
| 90 mph (144.84 km/h) | 101.51 mph (163.36 km/h) |
| 95 mph (152.89 km/h) | 107.15 mph (172.44 km/h) |
| 100 mph (160.93 km/h) | 112.79 mph (181.51 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1626 | 1889 | 2034 | 2124 | 2221 | 2290 | 2366 | 2456 | 2581 | 2705 | 2844 | 2954 | 3155 | 3376 | 3549 | 3660 | 3722 | 3951 | 4269 | 4961 |
Better Fuel Economy Factory Ratios Increased Power
