Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/75-16 | 315/75-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.6 (878.9) | 36.6 (929.7) | 2 (50.8) 5.8% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 108.71 (2761.15) | 114.99 (2920.74) | 6.28 (159.59) 5.8% |
| Sidewall Height inches (mm) | 9.3 (236.25) | 9.3 (236.25) | 0 (0) 0% |
| Revolutions per mile (km) | 582.85 (362.17) | 551.01 (342.38) | -31.85 (-19.79) -5.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.16 mph (34.05 km/h) |
| 25 mph (40.23 km/h) | 26.44 mph (42.56 km/h) |
| 30 mph (48.28 km/h) | 31.73 mph (51.07 km/h) |
| 35 mph (56.33 km/h) | 37.02 mph (59.58 km/h) |
| 40 mph (64.37 km/h) | 42.31 mph (68.09 km/h) |
| 45 mph (72.42 km/h) | 47.6 mph (76.61 km/h) |
| 50 mph (80.47 km/h) | 52.89 mph (85.12 km/h) |
| 55 mph (88.51 km/h) | 58.18 mph (93.63 km/h) |
| 60 mph (96.56 km/h) | 63.47 mph (102.14 km/h) |
| 65 mph (104.61 km/h) | 68.76 mph (110.65 km/h) |
| 70 mph (112.65 km/h) | 74.05 mph (119.17 km/h) |
| 75 mph (120.7 km/h) | 79.33 mph (127.68 km/h) |
| 80 mph (128.75 km/h) | 84.62 mph (136.19 km/h) |
| 85 mph (136.79 km/h) | 89.91 mph (144.7 km/h) |
| 90 mph (144.84 km/h) | 95.2 mph (153.21 km/h) |
| 95 mph (152.89 km/h) | 100.49 mph (161.72 km/h) |
| 100 mph (160.93 km/h) | 105.78 mph (170.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1402 | 1629 | 1754 | 1832 | 1915 | 1975 | 2041 | 2118 | 2226 | 2333 | 2452 | 2548 | 2721 | 2912 | 3061 | 3156 | 3210 | 3407 | 3682 | 4278 |
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