Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 365/75-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 41.56 (1055.5) | 13.57 (344.6) 48.5% |
| Width inches (mm) | 13.98 (355) | 14.37 (365) | 0.39 (10) 2.8% |
| Circum. inches (mm) | 87.93 (2233.36) | 130.55 (3315.95) | 42.62 (1082.59) 48.5% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 10.78 (273.75) | 7.28 (185) 208.5% |
| Revolutions per mile (km) | 720.59 (447.76) | 485.33 (301.57) | -235.26 (-146.18) -32.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 29.69 mph (47.79 km/h) |
| 25 mph (40.23 km/h) | 37.12 mph (59.74 km/h) |
| 30 mph (48.28 km/h) | 44.54 mph (71.68 km/h) |
| 35 mph (56.33 km/h) | 51.97 mph (83.63 km/h) |
| 40 mph (64.37 km/h) | 59.39 mph (95.58 km/h) |
| 45 mph (72.42 km/h) | 66.81 mph (107.53 km/h) |
| 50 mph (80.47 km/h) | 74.24 mph (119.47 km/h) |
| 55 mph (88.51 km/h) | 81.66 mph (131.42 km/h) |
| 60 mph (96.56 km/h) | 89.08 mph (143.37 km/h) |
| 65 mph (104.61 km/h) | 96.51 mph (155.31 km/h) |
| 70 mph (112.65 km/h) | 103.93 mph (167.26 km/h) |
| 75 mph (120.7 km/h) | 111.36 mph (179.21 km/h) |
| 80 mph (128.75 km/h) | 118.78 mph (191.16 km/h) |
| 85 mph (136.79 km/h) | 126.2 mph (203.1 km/h) |
| 90 mph (144.84 km/h) | 133.63 mph (215.05 km/h) |
| 95 mph (152.89 km/h) | 141.05 mph (227 km/h) |
| 100 mph (160.93 km/h) | 148.47 mph (238.95 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1235 | 1435 | 1545 | 1613 | 1687 | 1740 | 1797 | 1866 | 1960 | 2055 | 2160 | 2244 | 2397 | 2565 | 2696 | 2780 | 2828 | 3001 | 3243 | 3768 |
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