Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 385/30-26 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 35.09 (891.4) | 7.11 (180.5) 25.4% |
| Width inches (mm) | 13.98 (355) | 15.16 (385) | 1.18 (30) 8.5% |
| Circum. inches (mm) | 87.93 (2233.36) | 110.25 (2800.42) | 22.33 (567.06) 25.4% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 4.55 (115.5) | 1.05 (26.75) 30.1% |
| Revolutions per mile (km) | 720.59 (447.76) | 574.68 (357.09) | -145.91 (-90.67) -20.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.08 mph (40.36 km/h) |
| 25 mph (40.23 km/h) | 31.35 mph (50.45 km/h) |
| 30 mph (48.28 km/h) | 37.62 mph (60.54 km/h) |
| 35 mph (56.33 km/h) | 43.89 mph (70.63 km/h) |
| 40 mph (64.37 km/h) | 50.16 mph (80.72 km/h) |
| 45 mph (72.42 km/h) | 56.43 mph (90.81 km/h) |
| 50 mph (80.47 km/h) | 62.7 mph (100.9 km/h) |
| 55 mph (88.51 km/h) | 68.96 mph (110.99 km/h) |
| 60 mph (96.56 km/h) | 75.23 mph (121.08 km/h) |
| 65 mph (104.61 km/h) | 81.5 mph (131.17 km/h) |
| 70 mph (112.65 km/h) | 87.77 mph (141.26 km/h) |
| 75 mph (120.7 km/h) | 94.04 mph (151.35 km/h) |
| 80 mph (128.75 km/h) | 100.31 mph (161.44 km/h) |
| 85 mph (136.79 km/h) | 106.58 mph (171.53 km/h) |
| 90 mph (144.84 km/h) | 112.85 mph (181.62 km/h) |
| 95 mph (152.89 km/h) | 119.12 mph (191.71 km/h) |
| 100 mph (160.93 km/h) | 125.39 mph (201.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1462 | 1699 | 1830 | 1911 | 1998 | 2060 | 2128 | 2209 | 2321 | 2433 | 2558 | 2657 | 2838 | 3037 | 3193 | 3292 | 3348 | 3553 | 3840 | 4462 |
Better Fuel Economy Factory Ratios Increased Power
