Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/25-20 | 235/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.81 (655.5) | 25.55 (649) | -0.26 (-6.5) -1% |
| Width inches (mm) | 11.61 (295) | 9.25 (235) | -2.36 (-60) -20.3% |
| Circum. inches (mm) | 81.08 (2059.31) | 80.27 (2038.89) | -0.8 (-20.42) -1% |
| Sidewall Height inches (mm) | 2.9 (73.75) | 2.78 (70.5) | -0.13 (-3.25) -4.4% |
| Revolutions per mile (km) | 781.5 (485.6) | 789.32 (490.46) | 7.83 (4.86) 1% |
235/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.8 mph (31.87 km/h) |
| 25 mph (40.23 km/h) | 24.75 mph (39.83 km/h) |
| 30 mph (48.28 km/h) | 29.7 mph (47.8 km/h) |
| 35 mph (56.33 km/h) | 34.65 mph (55.77 km/h) |
| 40 mph (64.37 km/h) | 39.6 mph (63.74 km/h) |
| 45 mph (72.42 km/h) | 44.55 mph (71.7 km/h) |
| 50 mph (80.47 km/h) | 49.5 mph (79.67 km/h) |
| 55 mph (88.51 km/h) | 54.45 mph (87.64 km/h) |
| 60 mph (96.56 km/h) | 59.41 mph (95.6 km/h) |
| 65 mph (104.61 km/h) | 64.36 mph (103.57 km/h) |
| 70 mph (112.65 km/h) | 69.31 mph (111.54 km/h) |
| 75 mph (120.7 km/h) | 74.26 mph (119.5 km/h) |
| 80 mph (128.75 km/h) | 79.21 mph (127.47 km/h) |
| 85 mph (136.79 km/h) | 84.16 mph (135.44 km/h) |
| 90 mph (144.84 km/h) | 89.11 mph (143.4 km/h) |
| 95 mph (152.89 km/h) | 94.06 mph (151.37 km/h) |
| 100 mph (160.93 km/h) | 99.01 mph (159.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2009 | 2333 | 2513 | 2624 | 2744 | 2829 | 2923 | 3034 | 3188 | 3342 | 3513 | 3650 | 3898 | 4171 | 4385 | 4522 | 4599 | 4881 | 5274 | 6129 |
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