Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/25-19 | 315/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.2 (640.1) | 37.84 (961.2) | 12.64 (321.1) 50.2% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 79.17 (2010.93) | 118.89 (3019.7) | 39.72 (1008.77) 50.2% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 9.92 (252) | 6.82 (173.25) 220% |
| Revolutions per mile (km) | 800.3 (497.28) | 532.95 (331.16) | -267.35 (-166.12) -33.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.03 mph (48.33 km/h) |
| 25 mph (40.23 km/h) | 37.54 mph (60.42 km/h) |
| 30 mph (48.28 km/h) | 45.05 mph (72.5 km/h) |
| 35 mph (56.33 km/h) | 52.56 mph (84.58 km/h) |
| 40 mph (64.37 km/h) | 60.07 mph (96.67 km/h) |
| 45 mph (72.42 km/h) | 67.57 mph (108.75 km/h) |
| 50 mph (80.47 km/h) | 75.08 mph (120.83 km/h) |
| 55 mph (88.51 km/h) | 82.59 mph (132.92 km/h) |
| 60 mph (96.56 km/h) | 90.1 mph (145 km/h) |
| 65 mph (104.61 km/h) | 97.61 mph (157.08 km/h) |
| 70 mph (112.65 km/h) | 105.11 mph (169.17 km/h) |
| 75 mph (120.7 km/h) | 112.62 mph (181.25 km/h) |
| 80 mph (128.75 km/h) | 120.13 mph (193.33 km/h) |
| 85 mph (136.79 km/h) | 127.64 mph (205.42 km/h) |
| 90 mph (144.84 km/h) | 135.15 mph (217.5 km/h) |
| 95 mph (152.89 km/h) | 142.66 mph (229.58 km/h) |
| 100 mph (160.93 km/h) | 150.16 mph (241.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1356 | 1576 | 1697 | 1772 | 1853 | 1910 | 1974 | 2049 | 2153 | 2257 | 2372 | 2464 | 2632 | 2816 | 2961 | 3053 | 3105 | 3295 | 3561 | 4138 |
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