Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 325/25-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 28.4 (721.3) | 0.41 (10.4) 1.5% |
| Width inches (mm) | 13.98 (355) | 12.8 (325) | -1.18 (-30) -8.5% |
| Circum. inches (mm) | 87.93 (2233.36) | 89.21 (2266.03) | 1.29 (32.67) 1.5% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 3.2 (81.25) | -0.3 (-7.5) -8.5% |
| Revolutions per mile (km) | 720.59 (447.76) | 710.2 (441.3) | -10.39 (-6.46) -1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.29 mph (32.66 km/h) |
| 25 mph (40.23 km/h) | 25.37 mph (40.82 km/h) |
| 30 mph (48.28 km/h) | 30.44 mph (48.99 km/h) |
| 35 mph (56.33 km/h) | 35.51 mph (57.15 km/h) |
| 40 mph (64.37 km/h) | 40.59 mph (65.32 km/h) |
| 45 mph (72.42 km/h) | 45.66 mph (73.48 km/h) |
| 50 mph (80.47 km/h) | 50.73 mph (81.64 km/h) |
| 55 mph (88.51 km/h) | 55.8 mph (89.81 km/h) |
| 60 mph (96.56 km/h) | 60.88 mph (97.97 km/h) |
| 65 mph (104.61 km/h) | 65.95 mph (106.14 km/h) |
| 70 mph (112.65 km/h) | 71.02 mph (114.3 km/h) |
| 75 mph (120.7 km/h) | 76.1 mph (122.47 km/h) |
| 80 mph (128.75 km/h) | 81.17 mph (130.63 km/h) |
| 85 mph (136.79 km/h) | 86.24 mph (138.8 km/h) |
| 90 mph (144.84 km/h) | 91.32 mph (146.96 km/h) |
| 95 mph (152.89 km/h) | 96.39 mph (155.12 km/h) |
| 100 mph (160.93 km/h) | 101.46 mph (163.29 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1807 | 2100 | 2261 | 2361 | 2469 | 2546 | 2630 | 2730 | 2869 | 3007 | 3161 | 3284 | 3507 | 3753 | 3945 | 4068 | 4138 | 4391 | 4745 | 5514 |
Better Fuel Economy Factory Ratios Increased Power
