Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-19 | 320/30-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.44 (671.6) | 26.56 (674.6) | 0.12 (3) 0.4% |
| Width inches (mm) | 12.4 (315) | 12.6 (320) | 0.2 (5) 1.6% |
| Circum. inches (mm) | 83.07 (2109.89) | 83.44 (2119.32) | 0.37 (9.42) 0.4% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 3.78 (96) | 0.06 (1.5) 1.6% |
| Revolutions per mile (km) | 762.76 (473.96) | 759.37 (471.85) | -3.39 (-2.11) -0.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.09 mph (32.33 km/h) |
| 25 mph (40.23 km/h) | 25.11 mph (40.41 km/h) |
| 30 mph (48.28 km/h) | 30.13 mph (48.5 km/h) |
| 35 mph (56.33 km/h) | 35.16 mph (56.58 km/h) |
| 40 mph (64.37 km/h) | 40.18 mph (64.66 km/h) |
| 45 mph (72.42 km/h) | 45.2 mph (72.74 km/h) |
| 50 mph (80.47 km/h) | 50.22 mph (80.83 km/h) |
| 55 mph (88.51 km/h) | 55.25 mph (88.91 km/h) |
| 60 mph (96.56 km/h) | 60.27 mph (96.99 km/h) |
| 65 mph (104.61 km/h) | 65.29 mph (105.07 km/h) |
| 70 mph (112.65 km/h) | 70.31 mph (113.16 km/h) |
| 75 mph (120.7 km/h) | 75.34 mph (121.24 km/h) |
| 80 mph (128.75 km/h) | 80.36 mph (129.32 km/h) |
| 85 mph (136.79 km/h) | 85.38 mph (137.41 km/h) |
| 90 mph (144.84 km/h) | 90.4 mph (145.49 km/h) |
| 95 mph (152.89 km/h) | 95.42 mph (153.57 km/h) |
| 100 mph (160.93 km/h) | 100.45 mph (161.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1932 | 2245 | 2418 | 2525 | 2640 | 2722 | 2812 | 2919 | 3067 | 3215 | 3380 | 3511 | 3750 | 4013 | 4218 | 4350 | 4424 | 4695 | 5074 | 5896 |
Better Fuel Economy Factory Ratios Increased Power
