Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/50-15 | 325/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.83 (656) | 27.8 (706) | 1.97 (50) 7.6% |
| Width inches (mm) | 10.83 (275) | 12.8 (325) | 1.97 (50) 18.2% |
| Circum. inches (mm) | 81.14 (2060.88) | 87.32 (2217.96) | 6.18 (157.08) 7.6% |
| Sidewall Height inches (mm) | 5.41 (137.5) | 6.4 (162.5) | 0.98 (25) 18.2% |
| Revolutions per mile (km) | 780.9 (485.23) | 725.6 (450.86) | -55.3 (-34.36) -7.1% |
325/50-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.52 mph (34.64 km/h) |
| 25 mph (40.23 km/h) | 26.91 mph (43.3 km/h) |
| 30 mph (48.28 km/h) | 32.29 mph (51.96 km/h) |
| 35 mph (56.33 km/h) | 37.67 mph (60.62 km/h) |
| 40 mph (64.37 km/h) | 43.05 mph (69.28 km/h) |
| 45 mph (72.42 km/h) | 48.43 mph (77.94 km/h) |
| 50 mph (80.47 km/h) | 53.81 mph (86.6 km/h) |
| 55 mph (88.51 km/h) | 59.19 mph (95.26 km/h) |
| 60 mph (96.56 km/h) | 64.57 mph (103.92 km/h) |
| 65 mph (104.61 km/h) | 69.95 mph (112.58 km/h) |
| 70 mph (112.65 km/h) | 75.34 mph (121.24 km/h) |
| 75 mph (120.7 km/h) | 80.72 mph (129.9 km/h) |
| 80 mph (128.75 km/h) | 86.1 mph (138.56 km/h) |
| 85 mph (136.79 km/h) | 91.48 mph (147.22 km/h) |
| 90 mph (144.84 km/h) | 96.86 mph (155.88 km/h) |
| 95 mph (152.89 km/h) | 102.24 mph (164.54 km/h) |
| 100 mph (160.93 km/h) | 107.62 mph (173.2 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1847 | 2145 | 2310 | 2412 | 2522 | 2601 | 2687 | 2789 | 2931 | 3072 | 3229 | 3355 | 3583 | 3834 | 4031 | 4157 | 4227 | 4487 | 4848 | 5634 |
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