Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/25-21 | 295/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27 (685.9) | 26.97 (685) | -0.04 (-0.9) -0.1% |
| Width inches (mm) | 12.01 (305) | 11.61 (295) | -0.39 (-10) -3.3% |
| Circum. inches (mm) | 84.84 (2154.82) | 84.72 (2151.99) | -0.11 (-2.83) -0.1% |
| Sidewall Height inches (mm) | 3 (76.25) | 3.48 (88.5) | 0.48 (12.25) 16.1% |
| Revolutions per mile (km) | 746.86 (464.08) | 747.84 (464.69) | 0.98 (0.61) 0.1% |
295/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.97 mph (32.14 km/h) |
| 25 mph (40.23 km/h) | 24.97 mph (40.18 km/h) |
| 30 mph (48.28 km/h) | 29.96 mph (48.22 km/h) |
| 35 mph (56.33 km/h) | 34.95 mph (56.25 km/h) |
| 40 mph (64.37 km/h) | 39.95 mph (64.29 km/h) |
| 45 mph (72.42 km/h) | 44.94 mph (72.33 km/h) |
| 50 mph (80.47 km/h) | 49.93 mph (80.36 km/h) |
| 55 mph (88.51 km/h) | 54.93 mph (88.4 km/h) |
| 60 mph (96.56 km/h) | 59.92 mph (96.43 km/h) |
| 65 mph (104.61 km/h) | 64.91 mph (104.47 km/h) |
| 70 mph (112.65 km/h) | 69.91 mph (112.51 km/h) |
| 75 mph (120.7 km/h) | 74.9 mph (120.54 km/h) |
| 80 mph (128.75 km/h) | 79.9 mph (128.58 km/h) |
| 85 mph (136.79 km/h) | 84.89 mph (136.62 km/h) |
| 90 mph (144.84 km/h) | 89.88 mph (144.65 km/h) |
| 95 mph (152.89 km/h) | 94.88 mph (152.69 km/h) |
| 100 mph (160.93 km/h) | 99.87 mph (160.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1903 | 2211 | 2381 | 2486 | 2600 | 2681 | 2770 | 2875 | 3021 | 3166 | 3328 | 3458 | 3693 | 3952 | 4154 | 4284 | 4357 | 4624 | 4997 | 5807 |
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