Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-20 | 145/80-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.85 (682) | 28.13 (714.6) | 1.28 (32.6) 4.8% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 84.35 (2142.57) | 88.39 (2244.98) | 4.03 (102.42) 4.8% |
| Sidewall Height inches (mm) | 3.43 (87) | 4.57 (116) | 1.14 (29) 33.3% |
| Revolutions per mile (km) | 751.13 (466.73) | 716.86 (445.44) | -34.27 (-21.29) -4.6% |
145/80-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.96 mph (33.73 km/h) |
| 25 mph (40.23 km/h) | 26.2 mph (42.16 km/h) |
| 30 mph (48.28 km/h) | 31.43 mph (50.59 km/h) |
| 35 mph (56.33 km/h) | 36.67 mph (59.02 km/h) |
| 40 mph (64.37 km/h) | 41.91 mph (67.45 km/h) |
| 45 mph (72.42 km/h) | 47.15 mph (75.88 km/h) |
| 50 mph (80.47 km/h) | 52.39 mph (84.31 km/h) |
| 55 mph (88.51 km/h) | 57.63 mph (92.75 km/h) |
| 60 mph (96.56 km/h) | 62.87 mph (101.18 km/h) |
| 65 mph (104.61 km/h) | 68.11 mph (109.61 km/h) |
| 70 mph (112.65 km/h) | 73.35 mph (118.04 km/h) |
| 75 mph (120.7 km/h) | 78.59 mph (126.47 km/h) |
| 80 mph (128.75 km/h) | 83.82 mph (134.9 km/h) |
| 85 mph (136.79 km/h) | 89.06 mph (143.33 km/h) |
| 90 mph (144.84 km/h) | 94.3 mph (151.76 km/h) |
| 95 mph (152.89 km/h) | 99.54 mph (160.2 km/h) |
| 100 mph (160.93 km/h) | 104.78 mph (168.63 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1824 | 2119 | 2282 | 2383 | 2492 | 2570 | 2655 | 2756 | 2896 | 3035 | 3191 | 3315 | 3540 | 3788 | 3982 | 4107 | 4176 | 4433 | 4790 | 5566 |
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