Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/80-16 | 325/90-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.47 (926.4) | 39.03 (991.4) | 2.56 (65) 7% |
| Width inches (mm) | 12.8 (325) | 12.8 (325) | 0 (0) 0% |
| Circum. inches (mm) | 114.58 (2910.37) | 122.62 (3114.57) | 8.04 (204.2) 7% |
| Sidewall Height inches (mm) | 10.24 (260) | 11.52 (292.5) | 1.28 (32.5) 12.5% |
| Revolutions per mile (km) | 552.97 (343.6) | 516.71 (321.07) | -36.25 (-22.53) -6.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.4 mph (34.45 km/h) |
| 25 mph (40.23 km/h) | 26.75 mph (43.06 km/h) |
| 30 mph (48.28 km/h) | 32.1 mph (51.67 km/h) |
| 35 mph (56.33 km/h) | 37.46 mph (60.28 km/h) |
| 40 mph (64.37 km/h) | 42.81 mph (68.89 km/h) |
| 45 mph (72.42 km/h) | 48.16 mph (77.5 km/h) |
| 50 mph (80.47 km/h) | 53.51 mph (86.11 km/h) |
| 55 mph (88.51 km/h) | 58.86 mph (94.72 km/h) |
| 60 mph (96.56 km/h) | 64.21 mph (103.34 km/h) |
| 65 mph (104.61 km/h) | 69.56 mph (111.95 km/h) |
| 70 mph (112.65 km/h) | 74.91 mph (120.56 km/h) |
| 75 mph (120.7 km/h) | 80.26 mph (129.17 km/h) |
| 80 mph (128.75 km/h) | 85.61 mph (137.78 km/h) |
| 85 mph (136.79 km/h) | 90.96 mph (146.39 km/h) |
| 90 mph (144.84 km/h) | 96.31 mph (155 km/h) |
| 95 mph (152.89 km/h) | 101.67 mph (163.62 km/h) |
| 100 mph (160.93 km/h) | 107.02 mph (172.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1315 | 1528 | 1645 | 1718 | 1796 | 1852 | 1914 | 1986 | 2087 | 2188 | 2300 | 2389 | 2552 | 2731 | 2870 | 2960 | 3010 | 3195 | 3452 | 4012 |
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