Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/40-19 | 375/30-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.92 (734.6) | 27.86 (707.6) | -1.06 (-27) -3.7% |
| Width inches (mm) | 12.4 (315) | 14.76 (375) | 2.36 (60) 19% |
| Circum. inches (mm) | 90.86 (2307.81) | 87.52 (2222.99) | -3.34 (-84.82) -3.7% |
| Sidewall Height inches (mm) | 4.96 (126) | 4.43 (112.5) | -0.53 (-13.5) -10.7% |
| Revolutions per mile (km) | 697.35 (433.31) | 723.95 (449.84) | 26.61 (16.53) 3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.26 mph (31 km/h) |
| 25 mph (40.23 km/h) | 24.08 mph (38.75 km/h) |
| 30 mph (48.28 km/h) | 28.9 mph (46.51 km/h) |
| 35 mph (56.33 km/h) | 33.71 mph (54.26 km/h) |
| 40 mph (64.37 km/h) | 38.53 mph (62.01 km/h) |
| 45 mph (72.42 km/h) | 43.35 mph (69.76 km/h) |
| 50 mph (80.47 km/h) | 48.16 mph (77.51 km/h) |
| 55 mph (88.51 km/h) | 52.98 mph (85.26 km/h) |
| 60 mph (96.56 km/h) | 57.79 mph (93.01 km/h) |
| 65 mph (104.61 km/h) | 62.61 mph (100.76 km/h) |
| 70 mph (112.65 km/h) | 67.43 mph (108.51 km/h) |
| 75 mph (120.7 km/h) | 72.24 mph (116.26 km/h) |
| 80 mph (128.75 km/h) | 77.06 mph (124.02 km/h) |
| 85 mph (136.79 km/h) | 81.88 mph (131.77 km/h) |
| 90 mph (144.84 km/h) | 86.69 mph (139.52 km/h) |
| 95 mph (152.89 km/h) | 91.51 mph (147.27 km/h) |
| 100 mph (160.93 km/h) | 96.32 mph (155.02 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1842 | 2140 | 2305 | 2407 | 2517 | 2595 | 2681 | 2783 | 2924 | 3065 | 3222 | 3348 | 3575 | 3826 | 4022 | 4147 | 4218 | 4476 | 4837 | 5621 |
Better Fuel Economy Factory Ratios Increased Power
