Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 235/75-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 34.88 (885.9) | 6.89 (175) 24.6% |
| Width inches (mm) | 13.98 (355) | 9.25 (235) | -4.72 (-120) -33.8% |
| Circum. inches (mm) | 87.93 (2233.36) | 109.57 (2783.14) | 21.64 (549.78) 24.6% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 6.94 (176.25) | 3.44 (87.5) 98.6% |
| Revolutions per mile (km) | 720.59 (447.76) | 578.25 (359.31) | -142.35 (-88.45) -19.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.92 mph (40.11 km/h) |
| 25 mph (40.23 km/h) | 31.15 mph (50.14 km/h) |
| 30 mph (48.28 km/h) | 37.39 mph (60.17 km/h) |
| 35 mph (56.33 km/h) | 43.62 mph (70.19 km/h) |
| 40 mph (64.37 km/h) | 49.85 mph (80.22 km/h) |
| 45 mph (72.42 km/h) | 56.08 mph (90.25 km/h) |
| 50 mph (80.47 km/h) | 62.31 mph (100.28 km/h) |
| 55 mph (88.51 km/h) | 68.54 mph (110.3 km/h) |
| 60 mph (96.56 km/h) | 74.77 mph (120.33 km/h) |
| 65 mph (104.61 km/h) | 81 mph (130.36 km/h) |
| 70 mph (112.65 km/h) | 87.23 mph (140.39 km/h) |
| 75 mph (120.7 km/h) | 93.46 mph (150.41 km/h) |
| 80 mph (128.75 km/h) | 99.69 mph (160.44 km/h) |
| 85 mph (136.79 km/h) | 105.92 mph (170.47 km/h) |
| 90 mph (144.84 km/h) | 112.16 mph (180.5 km/h) |
| 95 mph (152.89 km/h) | 118.39 mph (190.52 km/h) |
| 100 mph (160.93 km/h) | 124.62 mph (200.55 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1472 | 1709 | 1841 | 1922 | 2010 | 2073 | 2142 | 2223 | 2336 | 2448 | 2574 | 2674 | 2855 | 3056 | 3212 | 3313 | 3369 | 3576 | 3864 | 4490 |
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