Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-12 | 175/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.13 (536.8) | 24.02 (610.2) | 2.89 (73.4) 13.7% |
| Width inches (mm) | 5.71 (145) | 6.89 (175) | 1.18 (30) 20.7% |
| Circum. inches (mm) | 66.39 (1686.41) | 75.47 (1917) | 9.08 (230.59) 13.7% |
| Sidewall Height inches (mm) | 4.57 (116) | 5.51 (140) | 0.94 (24) 20.7% |
| Revolutions per mile (km) | 954.3 (592.98) | 839.51 (521.65) | -114.79 (-71.33) -12% |
175/80-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.73 mph (36.59 km/h) |
| 25 mph (40.23 km/h) | 28.42 mph (45.74 km/h) |
| 30 mph (48.28 km/h) | 34.1 mph (54.88 km/h) |
| 35 mph (56.33 km/h) | 39.79 mph (64.03 km/h) |
| 40 mph (64.37 km/h) | 45.47 mph (73.18 km/h) |
| 45 mph (72.42 km/h) | 51.15 mph (82.32 km/h) |
| 50 mph (80.47 km/h) | 56.84 mph (91.47 km/h) |
| 55 mph (88.51 km/h) | 62.52 mph (100.62 km/h) |
| 60 mph (96.56 km/h) | 68.2 mph (109.76 km/h) |
| 65 mph (104.61 km/h) | 73.89 mph (118.91 km/h) |
| 70 mph (112.65 km/h) | 79.57 mph (128.06 km/h) |
| 75 mph (120.7 km/h) | 85.26 mph (137.21 km/h) |
| 80 mph (128.75 km/h) | 90.94 mph (146.35 km/h) |
| 85 mph (136.79 km/h) | 96.62 mph (155.5 km/h) |
| 90 mph (144.84 km/h) | 102.31 mph (164.65 km/h) |
| 95 mph (152.89 km/h) | 107.99 mph (173.79 km/h) |
| 100 mph (160.93 km/h) | 113.67 mph (182.94 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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