Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/60-20 | 33/12.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.35 (898) | 33.02 (838.72) | -2.33 (-59.28) -6.6% |
| Width inches (mm) | 12.8 (325) | 12.52 (318) | -0.28 (-7) -2.2% |
| Circum. inches (mm) | 111.07 (2821.15) | 103.74 (2634.92) | -7.33 (-186.23) -6.6% |
| Sidewall Height inches (mm) | 7.68 (195) | 6.51 (165.36) | -1.17 (-29.64) -15.2% |
| Revolutions per mile (km) | 570.46 (354.46) | 610.78 (379.52) | 40.32 (25.05) 7.1% |
33/12.5-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.68 mph (30.06 km/h) |
| 25 mph (40.23 km/h) | 23.35 mph (37.58 km/h) |
| 30 mph (48.28 km/h) | 28.02 mph (45.09 km/h) |
| 35 mph (56.33 km/h) | 32.69 mph (52.61 km/h) |
| 40 mph (64.37 km/h) | 37.36 mph (60.12 km/h) |
| 45 mph (72.42 km/h) | 42.03 mph (67.64 km/h) |
| 50 mph (80.47 km/h) | 46.7 mph (75.16 km/h) |
| 55 mph (88.51 km/h) | 51.37 mph (82.67 km/h) |
| 60 mph (96.56 km/h) | 56.04 mph (90.19 km/h) |
| 65 mph (104.61 km/h) | 60.71 mph (97.7 km/h) |
| 70 mph (112.65 km/h) | 65.38 mph (105.22 km/h) |
| 75 mph (120.7 km/h) | 70.05 mph (112.73 km/h) |
| 80 mph (128.75 km/h) | 74.72 mph (120.25 km/h) |
| 85 mph (136.79 km/h) | 79.39 mph (127.76 km/h) |
| 90 mph (144.84 km/h) | 84.06 mph (135.28 km/h) |
| 95 mph (152.89 km/h) | 88.73 mph (142.8 km/h) |
| 100 mph (160.93 km/h) | 93.4 mph (150.31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1554 | 1806 | 1945 | 2031 | 2123 | 2189 | 2262 | 2348 | 2467 | 2586 | 2718 | 2824 | 3016 | 3228 | 3393 | 3499 | 3558 | 3777 | 4081 | 4742 |
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