Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 385/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 29.09 (739) | 1.11 (28.1) 4% |
| Width inches (mm) | 13.98 (355) | 15.16 (385) | 1.18 (30) 8.5% |
| Circum. inches (mm) | 87.93 (2233.36) | 91.4 (2321.64) | 3.48 (88.28) 4% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 4.55 (115.5) | 1.05 (26.75) 30.1% |
| Revolutions per mile (km) | 720.59 (447.76) | 693.19 (430.73) | -27.4 (-17.03) -3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.79 mph (33.46 km/h) |
| 25 mph (40.23 km/h) | 25.99 mph (41.82 km/h) |
| 30 mph (48.28 km/h) | 31.19 mph (50.19 km/h) |
| 35 mph (56.33 km/h) | 36.38 mph (58.55 km/h) |
| 40 mph (64.37 km/h) | 41.58 mph (66.92 km/h) |
| 45 mph (72.42 km/h) | 46.78 mph (75.28 km/h) |
| 50 mph (80.47 km/h) | 51.98 mph (83.65 km/h) |
| 55 mph (88.51 km/h) | 57.17 mph (92.01 km/h) |
| 60 mph (96.56 km/h) | 62.37 mph (100.38 km/h) |
| 65 mph (104.61 km/h) | 67.57 mph (108.74 km/h) |
| 70 mph (112.65 km/h) | 72.77 mph (117.11 km/h) |
| 75 mph (120.7 km/h) | 77.96 mph (125.47 km/h) |
| 80 mph (128.75 km/h) | 83.16 mph (133.84 km/h) |
| 85 mph (136.79 km/h) | 88.36 mph (142.2 km/h) |
| 90 mph (144.84 km/h) | 93.56 mph (150.57 km/h) |
| 95 mph (152.89 km/h) | 98.76 mph (158.93 km/h) |
| 100 mph (160.93 km/h) | 103.95 mph (167.3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1764 | 2049 | 2207 | 2305 | 2410 | 2485 | 2567 | 2665 | 2800 | 2935 | 3085 | 3205 | 3423 | 3663 | 3851 | 3971 | 4039 | 4286 | 4632 | 5382 |
Better Fuel Economy Factory Ratios Increased Power
