Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/80-19 | 145/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.76 (730.6) | 26.85 (682) | -1.91 (-48.6) -6.7% |
| Width inches (mm) | 6.1 (155) | 5.71 (145) | -0.39 (-10) -6.5% |
| Circum. inches (mm) | 90.36 (2295.25) | 84.35 (2142.57) | -6.01 (-152.68) -6.7% |
| Sidewall Height inches (mm) | 4.88 (124) | 3.43 (87) | -1.46 (-37) -29.8% |
| Revolutions per mile (km) | 701.16 (435.68) | 751.13 (466.73) | 49.97 (31.05) 7.1% |
145/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.67 mph (30.05 km/h) |
| 25 mph (40.23 km/h) | 23.34 mph (37.56 km/h) |
| 30 mph (48.28 km/h) | 28 mph (45.07 km/h) |
| 35 mph (56.33 km/h) | 32.67 mph (52.58 km/h) |
| 40 mph (64.37 km/h) | 37.34 mph (60.09 km/h) |
| 45 mph (72.42 km/h) | 42.01 mph (67.6 km/h) |
| 50 mph (80.47 km/h) | 46.67 mph (75.11 km/h) |
| 55 mph (88.51 km/h) | 51.34 mph (82.63 km/h) |
| 60 mph (96.56 km/h) | 56.01 mph (90.14 km/h) |
| 65 mph (104.61 km/h) | 60.68 mph (97.65 km/h) |
| 70 mph (112.65 km/h) | 65.34 mph (105.16 km/h) |
| 75 mph (120.7 km/h) | 70.01 mph (112.67 km/h) |
| 80 mph (128.75 km/h) | 74.68 mph (120.18 km/h) |
| 85 mph (136.79 km/h) | 79.35 mph (127.69 km/h) |
| 90 mph (144.84 km/h) | 84.01 mph (135.21 km/h) |
| 95 mph (152.89 km/h) | 88.68 mph (142.72 km/h) |
| 100 mph (160.93 km/h) | 93.35 mph (150.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1911 | 2221 | 2391 | 2497 | 2611 | 2692 | 2782 | 2888 | 3034 | 3180 | 3343 | 3473 | 3709 | 3969 | 4173 | 4303 | 4376 | 4644 | 5019 | 5832 |
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