Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/25-19 | 325/30-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.2 (640.1) | 26.68 (677.6) | 1.48 (37.5) 5.9% |
| Width inches (mm) | 12.4 (315) | 12.8 (325) | 0.39 (10) 3.2% |
| Circum. inches (mm) | 79.17 (2010.93) | 83.81 (2128.74) | 4.64 (117.81) 5.9% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 3.84 (97.5) | 0.74 (18.75) 23.8% |
| Revolutions per mile (km) | 800.3 (497.28) | 756.01 (469.76) | -44.29 (-27.52) -5.5% |
325/30-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.17 mph (34.07 km/h) |
| 25 mph (40.23 km/h) | 26.46 mph (42.59 km/h) |
| 30 mph (48.28 km/h) | 31.76 mph (51.11 km/h) |
| 35 mph (56.33 km/h) | 37.05 mph (59.63 km/h) |
| 40 mph (64.37 km/h) | 42.34 mph (68.15 km/h) |
| 45 mph (72.42 km/h) | 47.64 mph (76.66 km/h) |
| 50 mph (80.47 km/h) | 52.93 mph (85.18 km/h) |
| 55 mph (88.51 km/h) | 58.22 mph (93.7 km/h) |
| 60 mph (96.56 km/h) | 63.52 mph (102.22 km/h) |
| 65 mph (104.61 km/h) | 68.81 mph (110.74 km/h) |
| 70 mph (112.65 km/h) | 74.1 mph (119.25 km/h) |
| 75 mph (120.7 km/h) | 79.39 mph (127.77 km/h) |
| 80 mph (128.75 km/h) | 84.69 mph (136.29 km/h) |
| 85 mph (136.79 km/h) | 89.98 mph (144.81 km/h) |
| 90 mph (144.84 km/h) | 95.27 mph (153.33 km/h) |
| 95 mph (152.89 km/h) | 100.57 mph (161.84 km/h) |
| 100 mph (160.93 km/h) | 105.86 mph (170.36 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1924 | 2235 | 2407 | 2513 | 2628 | 2710 | 2800 | 2906 | 3054 | 3201 | 3365 | 3496 | 3733 | 3995 | 4200 | 4331 | 4404 | 4675 | 5051 | 5870 |
Better Fuel Economy Factory Ratios Increased Power
