Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 255/50-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 32.54 (826.5) | 4.55 (115.6) 16.3% |
| Width inches (mm) | 13.98 (355) | 10.04 (255) | -3.94 (-100) -28.2% |
| Circum. inches (mm) | 87.93 (2233.36) | 102.23 (2596.53) | 14.3 (363.17) 16.3% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 5.02 (127.5) | 1.53 (38.75) 43.7% |
| Revolutions per mile (km) | 720.59 (447.76) | 619.81 (385.13) | -100.79 (-62.63) -14% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.25 mph (37.42 km/h) |
| 25 mph (40.23 km/h) | 29.07 mph (46.78 km/h) |
| 30 mph (48.28 km/h) | 34.88 mph (56.13 km/h) |
| 35 mph (56.33 km/h) | 40.69 mph (65.49 km/h) |
| 40 mph (64.37 km/h) | 46.5 mph (74.84 km/h) |
| 45 mph (72.42 km/h) | 52.32 mph (84.2 km/h) |
| 50 mph (80.47 km/h) | 58.13 mph (93.55 km/h) |
| 55 mph (88.51 km/h) | 63.94 mph (102.91 km/h) |
| 60 mph (96.56 km/h) | 69.76 mph (112.26 km/h) |
| 65 mph (104.61 km/h) | 75.57 mph (121.62 km/h) |
| 70 mph (112.65 km/h) | 81.38 mph (130.97 km/h) |
| 75 mph (120.7 km/h) | 87.2 mph (140.33 km/h) |
| 80 mph (128.75 km/h) | 93.01 mph (149.68 km/h) |
| 85 mph (136.79 km/h) | 98.82 mph (159.04 km/h) |
| 90 mph (144.84 km/h) | 104.63 mph (168.39 km/h) |
| 95 mph (152.89 km/h) | 110.45 mph (177.75 km/h) |
| 100 mph (160.93 km/h) | 116.26 mph (187.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1577 | 1832 | 1973 | 2061 | 2155 | 2222 | 2295 | 2383 | 2504 | 2624 | 2759 | 2866 | 3061 | 3275 | 3443 | 3551 | 3611 | 3832 | 4141 | 4812 |
Better Fuel Economy Factory Ratios Increased Power
