Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/80-15 | 325/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.47 (901) | 36.19 (919.3) | 0.72 (18.3) 2% |
| Width inches (mm) | 12.8 (325) | 12.8 (325) | 0 (0) 0% |
| Circum. inches (mm) | 111.44 (2830.57) | 113.7 (2888.07) | 2.26 (57.49) 2% |
| Sidewall Height inches (mm) | 10.24 (260) | 9.6 (243.75) | -0.64 (-16.25) -6.3% |
| Revolutions per mile (km) | 568.56 (353.28) | 557.24 (346.25) | -11.32 (-7.03) -2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.41 mph (32.84 km/h) |
| 25 mph (40.23 km/h) | 25.51 mph (41.05 km/h) |
| 30 mph (48.28 km/h) | 30.61 mph (49.26 km/h) |
| 35 mph (56.33 km/h) | 35.71 mph (57.47 km/h) |
| 40 mph (64.37 km/h) | 40.81 mph (65.68 km/h) |
| 45 mph (72.42 km/h) | 45.91 mph (73.89 km/h) |
| 50 mph (80.47 km/h) | 51.02 mph (82.1 km/h) |
| 55 mph (88.51 km/h) | 56.12 mph (90.31 km/h) |
| 60 mph (96.56 km/h) | 61.22 mph (98.52 km/h) |
| 65 mph (104.61 km/h) | 66.32 mph (106.73 km/h) |
| 70 mph (112.65 km/h) | 71.42 mph (114.94 km/h) |
| 75 mph (120.7 km/h) | 76.52 mph (123.15 km/h) |
| 80 mph (128.75 km/h) | 81.62 mph (131.36 km/h) |
| 85 mph (136.79 km/h) | 86.73 mph (139.57 km/h) |
| 90 mph (144.84 km/h) | 91.83 mph (147.78 km/h) |
| 95 mph (152.89 km/h) | 96.93 mph (155.99 km/h) |
| 100 mph (160.93 km/h) | 102.03 mph (164.2 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1418 | 1647 | 1774 | 1853 | 1937 | 1997 | 2064 | 2142 | 2251 | 2359 | 2480 | 2577 | 2752 | 2945 | 3096 | 3192 | 3246 | 3446 | 3723 | 4327 |
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