Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/40-19 | 315/45-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.92 (734.6) | 30.16 (766.1) | 1.24 (31.5) 4.3% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 90.86 (2307.81) | 94.75 (2406.77) | 3.9 (98.96) 4.3% |
| Sidewall Height inches (mm) | 4.96 (126) | 5.58 (141.75) | 0.62 (15.75) 12.5% |
| Revolutions per mile (km) | 697.35 (433.31) | 668.67 (415.49) | -28.67 (-17.82) -4.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.86 mph (33.57 km/h) |
| 25 mph (40.23 km/h) | 26.07 mph (41.96 km/h) |
| 30 mph (48.28 km/h) | 31.29 mph (50.35 km/h) |
| 35 mph (56.33 km/h) | 36.5 mph (58.74 km/h) |
| 40 mph (64.37 km/h) | 41.72 mph (67.13 km/h) |
| 45 mph (72.42 km/h) | 46.93 mph (75.53 km/h) |
| 50 mph (80.47 km/h) | 52.14 mph (83.92 km/h) |
| 55 mph (88.51 km/h) | 57.36 mph (92.31 km/h) |
| 60 mph (96.56 km/h) | 62.57 mph (100.7 km/h) |
| 65 mph (104.61 km/h) | 67.79 mph (109.09 km/h) |
| 70 mph (112.65 km/h) | 73 mph (117.48 km/h) |
| 75 mph (120.7 km/h) | 78.22 mph (125.88 km/h) |
| 80 mph (128.75 km/h) | 83.43 mph (134.27 km/h) |
| 85 mph (136.79 km/h) | 88.64 mph (142.66 km/h) |
| 90 mph (144.84 km/h) | 93.86 mph (151.05 km/h) |
| 95 mph (152.89 km/h) | 99.07 mph (159.44 km/h) |
| 100 mph (160.93 km/h) | 104.29 mph (167.84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1702 | 1977 | 2129 | 2223 | 2324 | 2397 | 2476 | 2571 | 2701 | 2831 | 2976 | 3092 | 3302 | 3534 | 3715 | 3831 | 3896 | 4135 | 4468 | 5192 |
Better Fuel Economy Factory Ratios Increased Power
