Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-20 | 155/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.85 (682) | 25.54 (648.8) | -1.31 (-33.2) -4.9% |
| Width inches (mm) | 5.71 (145) | 6.1 (155) | 0.39 (10) 6.9% |
| Circum. inches (mm) | 84.35 (2142.57) | 80.25 (2038.27) | -4.11 (-104.3) -4.9% |
| Sidewall Height inches (mm) | 3.43 (87) | 4.27 (108.5) | 0.85 (21.5) 24.7% |
| Revolutions per mile (km) | 751.13 (466.73) | 789.57 (490.61) | 38.44 (23.88) 5.1% |
155/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.03 mph (30.62 km/h) |
| 25 mph (40.23 km/h) | 23.78 mph (38.28 km/h) |
| 30 mph (48.28 km/h) | 28.54 mph (45.93 km/h) |
| 35 mph (56.33 km/h) | 33.3 mph (53.59 km/h) |
| 40 mph (64.37 km/h) | 38.05 mph (61.24 km/h) |
| 45 mph (72.42 km/h) | 42.81 mph (68.9 km/h) |
| 50 mph (80.47 km/h) | 47.57 mph (76.55 km/h) |
| 55 mph (88.51 km/h) | 52.32 mph (84.21 km/h) |
| 60 mph (96.56 km/h) | 57.08 mph (91.86 km/h) |
| 65 mph (104.61 km/h) | 61.84 mph (99.52 km/h) |
| 70 mph (112.65 km/h) | 66.59 mph (107.17 km/h) |
| 75 mph (120.7 km/h) | 71.35 mph (114.83 km/h) |
| 80 mph (128.75 km/h) | 76.11 mph (122.48 km/h) |
| 85 mph (136.79 km/h) | 80.86 mph (130.14 km/h) |
| 90 mph (144.84 km/h) | 85.62 mph (137.79 km/h) |
| 95 mph (152.89 km/h) | 90.38 mph (145.45 km/h) |
| 100 mph (160.93 km/h) | 95.13 mph (153.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2009 | 2334 | 2514 | 2625 | 2745 | 2830 | 2924 | 3035 | 3189 | 3343 | 3514 | 3651 | 3899 | 4172 | 4386 | 4523 | 4600 | 4882 | 5275 | 6130 |
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