Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/70-19 | 245/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.4 (797.6) | 26.72 (678.6) | -4.69 (-119) -14.9% |
| Width inches (mm) | 8.86 (225) | 9.65 (245) | 0.79 (20) 8.9% |
| Circum. inches (mm) | 98.65 (2505.73) | 83.93 (2131.88) | -14.72 (-373.85) -14.9% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 3.86 (98) | -2.34 (-59.5) -37.8% |
| Revolutions per mile (km) | 642.26 (399.08) | 754.89 (469.07) | 112.63 (69.98) 17.5% |
245/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.02 mph (27.38 km/h) |
| 25 mph (40.23 km/h) | 21.27 mph (34.23 km/h) |
| 30 mph (48.28 km/h) | 25.52 mph (41.08 km/h) |
| 35 mph (56.33 km/h) | 29.78 mph (47.92 km/h) |
| 40 mph (64.37 km/h) | 34.03 mph (54.77 km/h) |
| 45 mph (72.42 km/h) | 38.29 mph (61.62 km/h) |
| 50 mph (80.47 km/h) | 42.54 mph (68.46 km/h) |
| 55 mph (88.51 km/h) | 46.79 mph (75.31 km/h) |
| 60 mph (96.56 km/h) | 51.05 mph (82.15 km/h) |
| 65 mph (104.61 km/h) | 55.3 mph (89 km/h) |
| 70 mph (112.65 km/h) | 59.56 mph (95.85 km/h) |
| 75 mph (120.7 km/h) | 63.81 mph (102.69 km/h) |
| 80 mph (128.75 km/h) | 68.06 mph (109.54 km/h) |
| 85 mph (136.79 km/h) | 72.32 mph (116.39 km/h) |
| 90 mph (144.84 km/h) | 76.57 mph (123.23 km/h) |
| 95 mph (152.89 km/h) | 80.83 mph (130.08 km/h) |
| 100 mph (160.93 km/h) | 85.08 mph (136.92 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1921 | 2232 | 2403 | 2510 | 2624 | 2706 | 2796 | 2902 | 3049 | 3196 | 3360 | 3491 | 3728 | 3989 | 4194 | 4324 | 4398 | 4668 | 5044 | 5861 |
Better Fuel Economy Factory Ratios Increased Power
