Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-19 | 245/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.13 (714.6) | 26.72 (678.6) | -1.42 (-36) -5% |
| Width inches (mm) | 5.71 (145) | 9.65 (245) | 3.94 (100) 69% |
| Circum. inches (mm) | 88.39 (2244.98) | 83.93 (2131.88) | -4.45 (-113.1) -5% |
| Sidewall Height inches (mm) | 4.57 (116) | 3.86 (98) | -0.71 (-18) -15.5% |
| Revolutions per mile (km) | 716.86 (445.44) | 754.89 (469.07) | 38.03 (23.63) 5.3% |
245/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.99 mph (30.57 km/h) |
| 25 mph (40.23 km/h) | 23.74 mph (38.21 km/h) |
| 30 mph (48.28 km/h) | 28.49 mph (45.85 km/h) |
| 35 mph (56.33 km/h) | 33.24 mph (53.49 km/h) |
| 40 mph (64.37 km/h) | 37.98 mph (61.13 km/h) |
| 45 mph (72.42 km/h) | 42.73 mph (68.77 km/h) |
| 50 mph (80.47 km/h) | 47.48 mph (76.41 km/h) |
| 55 mph (88.51 km/h) | 52.23 mph (84.05 km/h) |
| 60 mph (96.56 km/h) | 56.98 mph (91.7 km/h) |
| 65 mph (104.61 km/h) | 61.73 mph (99.34 km/h) |
| 70 mph (112.65 km/h) | 66.47 mph (106.98 km/h) |
| 75 mph (120.7 km/h) | 71.22 mph (114.62 km/h) |
| 80 mph (128.75 km/h) | 75.97 mph (122.26 km/h) |
| 85 mph (136.79 km/h) | 80.72 mph (129.9 km/h) |
| 90 mph (144.84 km/h) | 85.47 mph (137.54 km/h) |
| 95 mph (152.89 km/h) | 90.21 mph (145.19 km/h) |
| 100 mph (160.93 km/h) | 94.96 mph (152.83 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
