Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 355/40-24 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 35.18 (893.6) | 7.19 (182.7) 25.7% |
| Width inches (mm) | 13.98 (355) | 13.98 (355) | 0 (0) 0% |
| Circum. inches (mm) | 87.93 (2233.36) | 110.52 (2807.33) | 22.6 (573.97) 25.7% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 5.59 (142) | 2.1 (53.25) 60% |
| Revolutions per mile (km) | 720.59 (447.76) | 573.27 (356.21) | -147.33 (-91.55) -20.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.14 mph (40.46 km/h) |
| 25 mph (40.23 km/h) | 31.42 mph (50.57 km/h) |
| 30 mph (48.28 km/h) | 37.71 mph (60.69 km/h) |
| 35 mph (56.33 km/h) | 43.99 mph (70.8 km/h) |
| 40 mph (64.37 km/h) | 50.28 mph (80.92 km/h) |
| 45 mph (72.42 km/h) | 56.56 mph (91.03 km/h) |
| 50 mph (80.47 km/h) | 62.85 mph (101.15 km/h) |
| 55 mph (88.51 km/h) | 69.13 mph (111.26 km/h) |
| 60 mph (96.56 km/h) | 75.42 mph (121.38 km/h) |
| 65 mph (104.61 km/h) | 81.7 mph (131.49 km/h) |
| 70 mph (112.65 km/h) | 87.99 mph (141.61 km/h) |
| 75 mph (120.7 km/h) | 94.27 mph (151.72 km/h) |
| 80 mph (128.75 km/h) | 100.56 mph (161.84 km/h) |
| 85 mph (136.79 km/h) | 106.84 mph (171.95 km/h) |
| 90 mph (144.84 km/h) | 113.13 mph (182.07 km/h) |
| 95 mph (152.89 km/h) | 119.41 mph (192.18 km/h) |
| 100 mph (160.93 km/h) | 125.7 mph (202.29 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1459 | 1695 | 1825 | 1906 | 1993 | 2055 | 2123 | 2204 | 2316 | 2427 | 2551 | 2651 | 2831 | 3029 | 3185 | 3284 | 3340 | 3545 | 3830 | 4451 |
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