Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/30-22 | 235/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.55 (699.8) | 30.18 (766.5) | 2.63 (66.7) 9.5% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 86.55 (2198.49) | 94.8 (2408.03) | 8.25 (209.54) 9.5% |
| Sidewall Height inches (mm) | 2.78 (70.5) | 5.09 (129.25) | 2.31 (58.75) 83.3% |
| Revolutions per mile (km) | 732.02 (454.86) | 668.32 (415.28) | -63.7 (-39.58) -8.7% |
235/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.91 mph (35.25 km/h) |
| 25 mph (40.23 km/h) | 27.38 mph (44.07 km/h) |
| 30 mph (48.28 km/h) | 32.86 mph (52.88 km/h) |
| 35 mph (56.33 km/h) | 38.34 mph (61.7 km/h) |
| 40 mph (64.37 km/h) | 43.81 mph (70.51 km/h) |
| 45 mph (72.42 km/h) | 49.29 mph (79.32 km/h) |
| 50 mph (80.47 km/h) | 54.77 mph (88.14 km/h) |
| 55 mph (88.51 km/h) | 60.24 mph (96.95 km/h) |
| 60 mph (96.56 km/h) | 65.72 mph (105.76 km/h) |
| 65 mph (104.61 km/h) | 71.2 mph (114.58 km/h) |
| 70 mph (112.65 km/h) | 76.67 mph (123.39 km/h) |
| 75 mph (120.7 km/h) | 82.15 mph (132.21 km/h) |
| 80 mph (128.75 km/h) | 87.63 mph (141.02 km/h) |
| 85 mph (136.79 km/h) | 93.1 mph (149.83 km/h) |
| 90 mph (144.84 km/h) | 98.58 mph (158.65 km/h) |
| 95 mph (152.89 km/h) | 104.05 mph (167.46 km/h) |
| 100 mph (160.93 km/h) | 109.53 mph (176.27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1701 | 1976 | 2128 | 2222 | 2323 | 2396 | 2475 | 2569 | 2699 | 2830 | 2975 | 3090 | 3300 | 3532 | 3713 | 3829 | 3894 | 4132 | 4465 | 5189 |
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