Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-19 | 255/45-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.13 (714.6) | 28.04 (712.1) | -0.1 (-2.5) -0.3% |
| Width inches (mm) | 5.71 (145) | 10.04 (255) | 4.33 (110) 75.9% |
| Circum. inches (mm) | 88.39 (2244.98) | 88.08 (2237.13) | -0.31 (-7.85) -0.3% |
| Sidewall Height inches (mm) | 4.57 (116) | 4.52 (114.75) | -0.05 (-1.25) -1.1% |
| Revolutions per mile (km) | 716.86 (445.44) | 719.38 (447) | 2.52 (1.56) 0.4% |
255/45-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.93 mph (32.07 km/h) |
| 25 mph (40.23 km/h) | 24.91 mph (40.09 km/h) |
| 30 mph (48.28 km/h) | 29.9 mph (48.11 km/h) |
| 35 mph (56.33 km/h) | 34.88 mph (56.13 km/h) |
| 40 mph (64.37 km/h) | 39.86 mph (64.15 km/h) |
| 45 mph (72.42 km/h) | 44.84 mph (72.17 km/h) |
| 50 mph (80.47 km/h) | 49.83 mph (80.19 km/h) |
| 55 mph (88.51 km/h) | 54.81 mph (88.2 km/h) |
| 60 mph (96.56 km/h) | 59.79 mph (96.22 km/h) |
| 65 mph (104.61 km/h) | 64.77 mph (104.24 km/h) |
| 70 mph (112.65 km/h) | 69.76 mph (112.26 km/h) |
| 75 mph (120.7 km/h) | 74.74 mph (120.28 km/h) |
| 80 mph (128.75 km/h) | 79.72 mph (128.3 km/h) |
| 85 mph (136.79 km/h) | 84.7 mph (136.32 km/h) |
| 90 mph (144.84 km/h) | 89.69 mph (144.33 km/h) |
| 95 mph (152.89 km/h) | 94.67 mph (152.35 km/h) |
| 100 mph (160.93 km/h) | 99.65 mph (160.37 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1831 | 2127 | 2290 | 2392 | 2501 | 2579 | 2664 | 2766 | 2906 | 3046 | 3202 | 3326 | 3552 | 3802 | 3996 | 4121 | 4191 | 4448 | 4807 | 5586 |
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