Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/25-19 | 305/30-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.2 (640.1) | 26.2 (665.6) | 1 (25.5) 4% |
| Width inches (mm) | 12.4 (315) | 12.01 (305) | -0.39 (-10) -3.2% |
| Circum. inches (mm) | 79.17 (2010.93) | 82.32 (2091.04) | 3.15 (80.11) 4% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 3.6 (91.5) | 0.5 (12.75) 16.2% |
| Revolutions per mile (km) | 800.3 (497.28) | 769.64 (478.23) | -30.66 (-19.05) -3.8% |
305/30-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.8 mph (33.47 km/h) |
| 25 mph (40.23 km/h) | 26 mph (41.84 km/h) |
| 30 mph (48.28 km/h) | 31.2 mph (50.2 km/h) |
| 35 mph (56.33 km/h) | 36.39 mph (58.57 km/h) |
| 40 mph (64.37 km/h) | 41.59 mph (66.94 km/h) |
| 45 mph (72.42 km/h) | 46.79 mph (75.31 km/h) |
| 50 mph (80.47 km/h) | 51.99 mph (83.67 km/h) |
| 55 mph (88.51 km/h) | 57.19 mph (92.04 km/h) |
| 60 mph (96.56 km/h) | 62.39 mph (100.41 km/h) |
| 65 mph (104.61 km/h) | 67.59 mph (108.77 km/h) |
| 70 mph (112.65 km/h) | 72.79 mph (117.14 km/h) |
| 75 mph (120.7 km/h) | 77.99 mph (125.51 km/h) |
| 80 mph (128.75 km/h) | 83.19 mph (133.88 km/h) |
| 85 mph (136.79 km/h) | 88.39 mph (142.24 km/h) |
| 90 mph (144.84 km/h) | 93.59 mph (150.61 km/h) |
| 95 mph (152.89 km/h) | 98.78 mph (158.98 km/h) |
| 100 mph (160.93 km/h) | 103.98 mph (167.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1959 | 2275 | 2450 | 2559 | 2675 | 2759 | 2850 | 2959 | 3109 | 3259 | 3425 | 3559 | 3800 | 4067 | 4276 | 4409 | 4484 | 4759 | 5142 | 5976 |
Better Fuel Economy Factory Ratios Increased Power
