Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/30-20 | 235/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.55 (649) | 26.48 (672.5) | 0.93 (23.5) 3.6% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 80.27 (2038.89) | 83.18 (2112.72) | 2.91 (73.83) 3.6% |
| Sidewall Height inches (mm) | 2.78 (70.5) | 3.24 (82.25) | 0.46 (11.75) 16.7% |
| Revolutions per mile (km) | 789.32 (490.46) | 761.74 (473.32) | -27.58 (-17.14) -3.5% |
235/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.72 mph (33.35 km/h) |
| 25 mph (40.23 km/h) | 25.91 mph (41.69 km/h) |
| 30 mph (48.28 km/h) | 31.09 mph (50.03 km/h) |
| 35 mph (56.33 km/h) | 36.27 mph (58.37 km/h) |
| 40 mph (64.37 km/h) | 41.45 mph (66.7 km/h) |
| 45 mph (72.42 km/h) | 46.63 mph (75.04 km/h) |
| 50 mph (80.47 km/h) | 51.81 mph (83.38 km/h) |
| 55 mph (88.51 km/h) | 56.99 mph (91.72 km/h) |
| 60 mph (96.56 km/h) | 62.17 mph (100.06 km/h) |
| 65 mph (104.61 km/h) | 67.35 mph (108.4 km/h) |
| 70 mph (112.65 km/h) | 72.53 mph (116.73 km/h) |
| 75 mph (120.7 km/h) | 77.72 mph (125.07 km/h) |
| 80 mph (128.75 km/h) | 82.9 mph (133.41 km/h) |
| 85 mph (136.79 km/h) | 88.08 mph (141.75 km/h) |
| 90 mph (144.84 km/h) | 93.26 mph (150.09 km/h) |
| 95 mph (152.89 km/h) | 98.44 mph (158.42 km/h) |
| 100 mph (160.93 km/h) | 103.62 mph (166.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1938 | 2252 | 2425 | 2532 | 2648 | 2730 | 2821 | 2928 | 3077 | 3225 | 3390 | 3522 | 3761 | 4025 | 4232 | 4364 | 4438 | 4710 | 5090 | 5914 |
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