Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-18 | 175/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.99 (660.2) | 24.02 (610.2) | -1.97 (-50) -7.6% |
| Width inches (mm) | 5.71 (145) | 6.89 (175) | 1.18 (30) 20.7% |
| Circum. inches (mm) | 81.66 (2074.08) | 75.47 (1917) | -6.18 (-157.08) -7.6% |
| Sidewall Height inches (mm) | 4 (101.5) | 5.51 (140) | 1.52 (38.5) 37.9% |
| Revolutions per mile (km) | 775.93 (482.14) | 839.51 (521.65) | 63.58 (39.51) 8.2% |
175/80-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.49 mph (29.75 km/h) |
| 25 mph (40.23 km/h) | 23.11 mph (37.19 km/h) |
| 30 mph (48.28 km/h) | 27.73 mph (44.62 km/h) |
| 35 mph (56.33 km/h) | 32.35 mph (52.06 km/h) |
| 40 mph (64.37 km/h) | 36.97 mph (59.5 km/h) |
| 45 mph (72.42 km/h) | 41.59 mph (66.94 km/h) |
| 50 mph (80.47 km/h) | 46.21 mph (74.37 km/h) |
| 55 mph (88.51 km/h) | 50.83 mph (81.81 km/h) |
| 60 mph (96.56 km/h) | 55.46 mph (89.25 km/h) |
| 65 mph (104.61 km/h) | 60.08 mph (96.69 km/h) |
| 70 mph (112.65 km/h) | 64.7 mph (104.12 km/h) |
| 75 mph (120.7 km/h) | 69.32 mph (111.56 km/h) |
| 80 mph (128.75 km/h) | 73.94 mph (119 km/h) |
| 85 mph (136.79 km/h) | 78.56 mph (126.43 km/h) |
| 90 mph (144.84 km/h) | 83.18 mph (133.87 km/h) |
| 95 mph (152.89 km/h) | 87.81 mph (141.31 km/h) |
| 100 mph (160.93 km/h) | 92.43 mph (148.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2136 | 2482 | 2673 | 2791 | 2918 | 3009 | 3109 | 3227 | 3391 | 3555 | 3736 | 3882 | 4146 | 4436 | 4664 | 4809 | 4891 | 5191 | 5609 | 6518 |
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