Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 355/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 36.77 (934) | 8.78 (223.1) 31.4% |
| Width inches (mm) | 13.98 (355) | 13.98 (355) | 0 (0) 0% |
| Circum. inches (mm) | 87.93 (2233.36) | 115.52 (2934.25) | 27.59 (700.89) 31.4% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 8.39 (213) | 4.89 (124.25) 140% |
| Revolutions per mile (km) | 720.59 (447.76) | 548.47 (340.8) | -172.12 (-106.95) -23.9% |
355/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.28 mph (42.29 km/h) |
| 25 mph (40.23 km/h) | 32.85 mph (52.86 km/h) |
| 30 mph (48.28 km/h) | 39.41 mph (63.43 km/h) |
| 35 mph (56.33 km/h) | 45.98 mph (74 km/h) |
| 40 mph (64.37 km/h) | 52.55 mph (84.58 km/h) |
| 45 mph (72.42 km/h) | 59.12 mph (95.15 km/h) |
| 50 mph (80.47 km/h) | 65.69 mph (105.72 km/h) |
| 55 mph (88.51 km/h) | 72.26 mph (116.29 km/h) |
| 60 mph (96.56 km/h) | 78.83 mph (126.86 km/h) |
| 65 mph (104.61 km/h) | 85.4 mph (137.44 km/h) |
| 70 mph (112.65 km/h) | 91.97 mph (148.01 km/h) |
| 75 mph (120.7 km/h) | 98.54 mph (158.58 km/h) |
| 80 mph (128.75 km/h) | 105.11 mph (169.15 km/h) |
| 85 mph (136.79 km/h) | 111.68 mph (179.72 km/h) |
| 90 mph (144.84 km/h) | 118.24 mph (190.3 km/h) |
| 95 mph (152.89 km/h) | 124.81 mph (200.87 km/h) |
| 100 mph (160.93 km/h) | 131.38 mph (211.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1396 | 1621 | 1746 | 1823 | 1907 | 1966 | 2031 | 2108 | 2215 | 2322 | 2441 | 2536 | 2708 | 2898 | 3047 | 3142 | 3195 | 3391 | 3665 | 4259 |
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