Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/30-20 | 235/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.02 (661) | 26.48 (672.5) | 0.45 (11.5) 1.7% |
| Width inches (mm) | 10.04 (255) | 9.25 (235) | -0.79 (-20) -7.8% |
| Circum. inches (mm) | 81.76 (2076.59) | 83.18 (2112.72) | 1.42 (36.13) 1.7% |
| Sidewall Height inches (mm) | 3.01 (76.5) | 3.24 (82.25) | 0.23 (5.75) 7.5% |
| Revolutions per mile (km) | 774.99 (481.56) | 761.74 (473.32) | -13.25 (-8.23) -1.7% |
235/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.35 mph (32.75 km/h) |
| 25 mph (40.23 km/h) | 25.43 mph (40.93 km/h) |
| 30 mph (48.28 km/h) | 30.52 mph (49.12 km/h) |
| 35 mph (56.33 km/h) | 35.61 mph (57.31 km/h) |
| 40 mph (64.37 km/h) | 40.7 mph (65.49 km/h) |
| 45 mph (72.42 km/h) | 45.78 mph (73.68 km/h) |
| 50 mph (80.47 km/h) | 50.87 mph (81.87 km/h) |
| 55 mph (88.51 km/h) | 55.96 mph (90.05 km/h) |
| 60 mph (96.56 km/h) | 61.04 mph (98.24 km/h) |
| 65 mph (104.61 km/h) | 66.13 mph (106.43 km/h) |
| 70 mph (112.65 km/h) | 71.22 mph (114.61 km/h) |
| 75 mph (120.7 km/h) | 76.3 mph (122.8 km/h) |
| 80 mph (128.75 km/h) | 81.39 mph (130.99 km/h) |
| 85 mph (136.79 km/h) | 86.48 mph (139.17 km/h) |
| 90 mph (144.84 km/h) | 91.57 mph (147.36 km/h) |
| 95 mph (152.89 km/h) | 96.65 mph (155.55 km/h) |
| 100 mph (160.93 km/h) | 101.74 mph (163.73 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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