Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/70-17 | 285/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.36 (872.8) | 33.83 (859.3) | -0.53 (-13.5) -1.5% |
| Width inches (mm) | 12.4 (315) | 11.22 (285) | -1.18 (-30) -9.5% |
| Circum. inches (mm) | 107.95 (2741.98) | 106.28 (2699.57) | -1.67 (-42.41) -1.5% |
| Sidewall Height inches (mm) | 8.68 (220.5) | 8.42 (213.75) | -0.27 (-6.75) -3.1% |
| Revolutions per mile (km) | 586.93 (364.7) | 596.15 (370.43) | 9.22 (5.73) 1.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.69 mph (31.69 km/h) |
| 25 mph (40.23 km/h) | 24.61 mph (39.61 km/h) |
| 30 mph (48.28 km/h) | 29.54 mph (47.53 km/h) |
| 35 mph (56.33 km/h) | 34.46 mph (55.46 km/h) |
| 40 mph (64.37 km/h) | 39.38 mph (63.38 km/h) |
| 45 mph (72.42 km/h) | 44.3 mph (71.3 km/h) |
| 50 mph (80.47 km/h) | 49.23 mph (79.22 km/h) |
| 55 mph (88.51 km/h) | 54.15 mph (87.15 km/h) |
| 60 mph (96.56 km/h) | 59.07 mph (95.07 km/h) |
| 65 mph (104.61 km/h) | 63.99 mph (102.99 km/h) |
| 70 mph (112.65 km/h) | 68.92 mph (110.91 km/h) |
| 75 mph (120.7 km/h) | 73.84 mph (118.83 km/h) |
| 80 mph (128.75 km/h) | 78.76 mph (126.76 km/h) |
| 85 mph (136.79 km/h) | 83.69 mph (134.68 km/h) |
| 90 mph (144.84 km/h) | 88.61 mph (142.6 km/h) |
| 95 mph (152.89 km/h) | 93.53 mph (150.52 km/h) |
| 100 mph (160.93 km/h) | 98.45 mph (158.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1517 | 1762 | 1898 | 1982 | 2072 | 2137 | 2208 | 2292 | 2408 | 2524 | 2653 | 2757 | 2944 | 3150 | 3312 | 3415 | 3473 | 3686 | 3983 | 4629 |
Better Fuel Economy Factory Ratios Increased Power
