Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/70-17 | 325/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.36 (872.8) | 34.91 (886.8) | 0.55 (14) 1.6% |
| Width inches (mm) | 12.4 (315) | 12.8 (325) | 0.39 (10) 3.2% |
| Circum. inches (mm) | 107.95 (2741.98) | 109.68 (2785.96) | 1.73 (43.98) 1.6% |
| Sidewall Height inches (mm) | 8.68 (220.5) | 8.96 (227.5) | 0.28 (7) 3.2% |
| Revolutions per mile (km) | 586.93 (364.7) | 577.66 (358.94) | -9.27 (-5.76) -1.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.32 mph (32.7 km/h) |
| 25 mph (40.23 km/h) | 25.4 mph (40.88 km/h) |
| 30 mph (48.28 km/h) | 30.48 mph (49.05 km/h) |
| 35 mph (56.33 km/h) | 35.56 mph (57.23 km/h) |
| 40 mph (64.37 km/h) | 40.64 mph (65.41 km/h) |
| 45 mph (72.42 km/h) | 45.72 mph (73.58 km/h) |
| 50 mph (80.47 km/h) | 50.8 mph (81.76 km/h) |
| 55 mph (88.51 km/h) | 55.88 mph (89.93 km/h) |
| 60 mph (96.56 km/h) | 60.96 mph (98.11 km/h) |
| 65 mph (104.61 km/h) | 66.04 mph (106.29 km/h) |
| 70 mph (112.65 km/h) | 71.12 mph (114.46 km/h) |
| 75 mph (120.7 km/h) | 76.2 mph (122.64 km/h) |
| 80 mph (128.75 km/h) | 81.28 mph (130.81 km/h) |
| 85 mph (136.79 km/h) | 86.36 mph (138.99 km/h) |
| 90 mph (144.84 km/h) | 91.44 mph (147.16 km/h) |
| 95 mph (152.89 km/h) | 96.52 mph (155.34 km/h) |
| 100 mph (160.93 km/h) | 101.6 mph (163.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1470 | 1708 | 1839 | 1920 | 2008 | 2071 | 2139 | 2221 | 2333 | 2446 | 2571 | 2671 | 2852 | 3053 | 3209 | 3309 | 3365 | 3572 | 3860 | 4485 |
Better Fuel Economy Factory Ratios Increased Power
