Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 315/45-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 33.66 (855) | 5.67 (144.1) 20.3% |
| Width inches (mm) | 13.98 (355) | 12.4 (315) | -1.57 (-40) -11.3% |
| Circum. inches (mm) | 87.93 (2233.36) | 105.75 (2686.06) | 17.82 (452.7) 20.3% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 5.58 (141.75) | 2.09 (53) 59.7% |
| Revolutions per mile (km) | 720.59 (447.76) | 599.15 (372.29) | -121.45 (-75.46) -16.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.05 mph (38.71 km/h) |
| 25 mph (40.23 km/h) | 30.07 mph (48.39 km/h) |
| 30 mph (48.28 km/h) | 36.08 mph (58.07 km/h) |
| 35 mph (56.33 km/h) | 42.09 mph (67.74 km/h) |
| 40 mph (64.37 km/h) | 48.11 mph (77.42 km/h) |
| 45 mph (72.42 km/h) | 54.12 mph (87.1 km/h) |
| 50 mph (80.47 km/h) | 60.14 mph (96.78 km/h) |
| 55 mph (88.51 km/h) | 66.15 mph (106.46 km/h) |
| 60 mph (96.56 km/h) | 72.16 mph (116.13 km/h) |
| 65 mph (104.61 km/h) | 78.18 mph (125.81 km/h) |
| 70 mph (112.65 km/h) | 84.19 mph (135.49 km/h) |
| 75 mph (120.7 km/h) | 90.2 mph (145.17 km/h) |
| 80 mph (128.75 km/h) | 96.22 mph (154.85 km/h) |
| 85 mph (136.79 km/h) | 102.23 mph (164.52 km/h) |
| 90 mph (144.84 km/h) | 108.24 mph (174.2 km/h) |
| 95 mph (152.89 km/h) | 114.26 mph (183.88 km/h) |
| 100 mph (160.93 km/h) | 120.27 mph (193.56 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1525 | 1771 | 1908 | 1992 | 2083 | 2148 | 2219 | 2303 | 2420 | 2537 | 2667 | 2770 | 2959 | 3166 | 3328 | 3432 | 3491 | 3705 | 4003 | 4652 |
Better Fuel Economy Factory Ratios Increased Power
