Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-18 | 245/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.54 (674.2) | 26.72 (678.6) | 0.17 (4.4) 0.7% |
| Width inches (mm) | 6.1 (155) | 9.65 (245) | 3.54 (90) 58.1% |
| Circum. inches (mm) | 83.39 (2118.06) | 83.93 (2131.88) | 0.54 (13.82) 0.7% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 3.86 (98) | -0.41 (-10.5) -9.7% |
| Revolutions per mile (km) | 759.82 (472.13) | 754.89 (469.07) | -4.93 (-3.06) -0.6% |
245/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.13 mph (32.4 km/h) |
| 25 mph (40.23 km/h) | 25.16 mph (40.5 km/h) |
| 30 mph (48.28 km/h) | 30.2 mph (48.6 km/h) |
| 35 mph (56.33 km/h) | 35.23 mph (56.69 km/h) |
| 40 mph (64.37 km/h) | 40.26 mph (64.79 km/h) |
| 45 mph (72.42 km/h) | 45.29 mph (72.89 km/h) |
| 50 mph (80.47 km/h) | 50.33 mph (80.99 km/h) |
| 55 mph (88.51 km/h) | 55.36 mph (89.09 km/h) |
| 60 mph (96.56 km/h) | 60.39 mph (97.19 km/h) |
| 65 mph (104.61 km/h) | 65.42 mph (105.29 km/h) |
| 70 mph (112.65 km/h) | 70.46 mph (113.39 km/h) |
| 75 mph (120.7 km/h) | 75.49 mph (121.49 km/h) |
| 80 mph (128.75 km/h) | 80.52 mph (129.59 km/h) |
| 85 mph (136.79 km/h) | 85.55 mph (137.69 km/h) |
| 90 mph (144.84 km/h) | 90.59 mph (145.79 km/h) |
| 95 mph (152.89 km/h) | 95.62 mph (153.89 km/h) |
| 100 mph (160.93 km/h) | 100.65 mph (161.99 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
