Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/40-19 | 305/35-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.92 (734.6) | 27.41 (696.1) | -1.52 (-38.5) -5.2% |
| Width inches (mm) | 12.4 (315) | 12.01 (305) | -0.39 (-10) -3.2% |
| Circum. inches (mm) | 90.86 (2307.81) | 86.1 (2186.86) | -4.76 (-120.95) -5.2% |
| Sidewall Height inches (mm) | 4.96 (126) | 4.2 (106.75) | -0.76 (-19.25) -15.3% |
| Revolutions per mile (km) | 697.35 (433.31) | 735.91 (457.28) | 38.57 (23.97) 5.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.95 mph (30.5 km/h) |
| 25 mph (40.23 km/h) | 23.69 mph (38.13 km/h) |
| 30 mph (48.28 km/h) | 28.43 mph (45.75 km/h) |
| 35 mph (56.33 km/h) | 33.17 mph (53.38 km/h) |
| 40 mph (64.37 km/h) | 37.9 mph (61 km/h) |
| 45 mph (72.42 km/h) | 42.64 mph (68.63 km/h) |
| 50 mph (80.47 km/h) | 47.38 mph (76.25 km/h) |
| 55 mph (88.51 km/h) | 52.12 mph (83.88 km/h) |
| 60 mph (96.56 km/h) | 56.86 mph (91.5 km/h) |
| 65 mph (104.61 km/h) | 61.59 mph (99.13 km/h) |
| 70 mph (112.65 km/h) | 66.33 mph (106.75 km/h) |
| 75 mph (120.7 km/h) | 71.07 mph (114.38 km/h) |
| 80 mph (128.75 km/h) | 75.81 mph (122 km/h) |
| 85 mph (136.79 km/h) | 80.55 mph (129.63 km/h) |
| 90 mph (144.84 km/h) | 85.28 mph (137.25 km/h) |
| 95 mph (152.89 km/h) | 90.02 mph (144.88 km/h) |
| 100 mph (160.93 km/h) | 94.76 mph (152.5 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1873 | 2176 | 2343 | 2447 | 2558 | 2638 | 2725 | 2829 | 2973 | 3116 | 3275 | 3403 | 3634 | 3889 | 4088 | 4216 | 4287 | 4550 | 4917 | 5714 |
Better Fuel Economy Factory Ratios Increased Power
