Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/75-17 | 310/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.47 (799.3) | 34.09 (865.8) | 2.62 (66.5) 8.3% |
| Width inches (mm) | 9.65 (245) | 12.2 (310) | 2.56 (65) 26.5% |
| Circum. inches (mm) | 98.86 (2511.08) | 107.09 (2719.99) | 8.23 (208.92) 8.3% |
| Sidewall Height inches (mm) | 7.23 (183.75) | 8.54 (217) | 1.31 (33.25) 18.1% |
| Revolutions per mile (km) | 640.9 (398.24) | 591.67 (367.65) | -49.23 (-30.59) -7.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.66 mph (34.86 km/h) |
| 25 mph (40.23 km/h) | 27.08 mph (43.58 km/h) |
| 30 mph (48.28 km/h) | 32.5 mph (52.3 km/h) |
| 35 mph (56.33 km/h) | 37.91 mph (61.01 km/h) |
| 40 mph (64.37 km/h) | 43.33 mph (69.73 km/h) |
| 45 mph (72.42 km/h) | 48.74 mph (78.45 km/h) |
| 50 mph (80.47 km/h) | 54.16 mph (87.16 km/h) |
| 55 mph (88.51 km/h) | 59.58 mph (95.88 km/h) |
| 60 mph (96.56 km/h) | 64.99 mph (104.59 km/h) |
| 65 mph (104.61 km/h) | 70.41 mph (113.31 km/h) |
| 70 mph (112.65 km/h) | 75.82 mph (122.03 km/h) |
| 75 mph (120.7 km/h) | 81.24 mph (130.74 km/h) |
| 80 mph (128.75 km/h) | 86.66 mph (139.46 km/h) |
| 85 mph (136.79 km/h) | 92.07 mph (148.18 km/h) |
| 90 mph (144.84 km/h) | 97.49 mph (156.89 km/h) |
| 95 mph (152.89 km/h) | 102.9 mph (165.61 km/h) |
| 100 mph (160.93 km/h) | 108.32 mph (174.32 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1506 | 1749 | 1884 | 1967 | 2057 | 2121 | 2191 | 2275 | 2390 | 2505 | 2633 | 2736 | 2922 | 3127 | 3287 | 3389 | 3447 | 3659 | 3953 | 4594 |
Better Fuel Economy Factory Ratios Increased Power
