Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/25-20 | 275/30-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.61 (650.5) | 25.5 (647.6) | -0.11 (-2.9) -0.4% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 80.46 (2043.61) | 80.1 (2034.5) | -0.36 (-9.11) -0.4% |
| Sidewall Height inches (mm) | 2.81 (71.25) | 3.25 (82.5) | 0.44 (11.25) 15.8% |
| Revolutions per mile (km) | 787.5 (489.33) | 791.03 (491.52) | 3.53 (2.19) 0.4% |
275/30-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.91 mph (32.04 km/h) |
| 25 mph (40.23 km/h) | 24.89 mph (40.05 km/h) |
| 30 mph (48.28 km/h) | 29.87 mph (48.07 km/h) |
| 35 mph (56.33 km/h) | 34.84 mph (56.08 km/h) |
| 40 mph (64.37 km/h) | 39.82 mph (64.09 km/h) |
| 45 mph (72.42 km/h) | 44.8 mph (72.1 km/h) |
| 50 mph (80.47 km/h) | 49.78 mph (80.11 km/h) |
| 55 mph (88.51 km/h) | 54.75 mph (88.12 km/h) |
| 60 mph (96.56 km/h) | 59.73 mph (96.13 km/h) |
| 65 mph (104.61 km/h) | 64.71 mph (104.14 km/h) |
| 70 mph (112.65 km/h) | 69.69 mph (112.15 km/h) |
| 75 mph (120.7 km/h) | 74.67 mph (120.16 km/h) |
| 80 mph (128.75 km/h) | 79.64 mph (128.17 km/h) |
| 85 mph (136.79 km/h) | 84.62 mph (136.18 km/h) |
| 90 mph (144.84 km/h) | 89.6 mph (144.2 km/h) |
| 95 mph (152.89 km/h) | 94.58 mph (152.21 km/h) |
| 100 mph (160.93 km/h) | 99.55 mph (160.22 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | 2339 | 2518 | 2630 | 2750 | 2835 | 2930 | 3041 | 3195 | 3349 | 3521 | 3658 | 3906 | 4180 | 4394 | 4531 | 4609 | 4891 | 5285 | 6142 |
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