Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 315/60-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 37.38 (949.5) | 9.39 (238.6) 33.6% |
| Width inches (mm) | 13.98 (355) | 12.4 (315) | -1.57 (-40) -11.3% |
| Circum. inches (mm) | 87.93 (2233.36) | 117.44 (2982.94) | 29.51 (749.58) 33.6% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 7.44 (189) | 3.95 (100.25) 113% |
| Revolutions per mile (km) | 720.59 (447.76) | 539.52 (335.24) | -181.08 (-112.52) -25.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.71 mph (42.99 km/h) |
| 25 mph (40.23 km/h) | 33.39 mph (53.74 km/h) |
| 30 mph (48.28 km/h) | 40.07 mph (64.48 km/h) |
| 35 mph (56.33 km/h) | 46.75 mph (75.23 km/h) |
| 40 mph (64.37 km/h) | 53.43 mph (85.98 km/h) |
| 45 mph (72.42 km/h) | 60.1 mph (96.73 km/h) |
| 50 mph (80.47 km/h) | 66.78 mph (107.47 km/h) |
| 55 mph (88.51 km/h) | 73.46 mph (118.22 km/h) |
| 60 mph (96.56 km/h) | 80.14 mph (128.97 km/h) |
| 65 mph (104.61 km/h) | 86.82 mph (139.72 km/h) |
| 70 mph (112.65 km/h) | 93.49 mph (150.46 km/h) |
| 75 mph (120.7 km/h) | 100.17 mph (161.21 km/h) |
| 80 mph (128.75 km/h) | 106.85 mph (171.96 km/h) |
| 85 mph (136.79 km/h) | 113.53 mph (182.71 km/h) |
| 90 mph (144.84 km/h) | 120.21 mph (193.45 km/h) |
| 95 mph (152.89 km/h) | 126.88 mph (204.2 km/h) |
| 100 mph (160.93 km/h) | 133.56 mph (214.95 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1373 | 1595 | 1718 | 1794 | 1875 | 1934 | 1998 | 2074 | 2179 | 2284 | 2401 | 2495 | 2664 | 2851 | 2997 | 3091 | 3143 | 3336 | 3605 | 4189 |
Better Fuel Economy Factory Ratios Increased Power
