Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 355/25-25 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 31.99 (812.5) | 4 (101.6) 14.3% |
| Width inches (mm) | 13.98 (355) | 13.98 (355) | 0 (0) 0% |
| Circum. inches (mm) | 87.93 (2233.36) | 100.49 (2552.54) | 12.57 (319.19) 14.3% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 3.49 (88.75) | 0 (0) 0% |
| Revolutions per mile (km) | 720.59 (447.76) | 630.49 (391.77) | -90.11 (-55.99) -12.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.86 mph (36.79 km/h) |
| 25 mph (40.23 km/h) | 28.57 mph (45.98 km/h) |
| 30 mph (48.28 km/h) | 34.29 mph (55.18 km/h) |
| 35 mph (56.33 km/h) | 40 mph (64.38 km/h) |
| 40 mph (64.37 km/h) | 45.72 mph (73.57 km/h) |
| 45 mph (72.42 km/h) | 51.43 mph (82.77 km/h) |
| 50 mph (80.47 km/h) | 57.15 mph (91.97 km/h) |
| 55 mph (88.51 km/h) | 62.86 mph (101.16 km/h) |
| 60 mph (96.56 km/h) | 68.58 mph (110.36 km/h) |
| 65 mph (104.61 km/h) | 74.29 mph (119.56 km/h) |
| 70 mph (112.65 km/h) | 80 mph (128.75 km/h) |
| 75 mph (120.7 km/h) | 85.72 mph (137.95 km/h) |
| 80 mph (128.75 km/h) | 91.43 mph (147.15 km/h) |
| 85 mph (136.79 km/h) | 97.15 mph (156.34 km/h) |
| 90 mph (144.84 km/h) | 102.86 mph (165.54 km/h) |
| 95 mph (152.89 km/h) | 108.58 mph (174.74 km/h) |
| 100 mph (160.93 km/h) | 114.29 mph (183.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1604 | 1864 | 2007 | 2096 | 2192 | 2260 | 2335 | 2424 | 2547 | 2670 | 2806 | 2915 | 3113 | 3332 | 3503 | 3612 | 3673 | 3899 | 4213 | 4895 |
Better Fuel Economy Factory Ratios Increased Power
