Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-18 | 245/45-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.13 (689.2) | 27.68 (703.1) | 0.55 (13.9) 2% |
| Width inches (mm) | 5.71 (145) | 9.65 (245) | 3.94 (100) 69% |
| Circum. inches (mm) | 85.24 (2165.19) | 86.96 (2208.85) | 1.72 (43.67) 2% |
| Sidewall Height inches (mm) | 4.57 (116) | 4.34 (110.25) | -0.23 (-5.75) -5% |
| Revolutions per mile (km) | 743.28 (461.85) | 728.59 (452.72) | -14.69 (-9.13) -2% |
245/45-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.4 mph (32.84 km/h) |
| 25 mph (40.23 km/h) | 25.5 mph (41.05 km/h) |
| 30 mph (48.28 km/h) | 30.61 mph (49.25 km/h) |
| 35 mph (56.33 km/h) | 35.71 mph (57.46 km/h) |
| 40 mph (64.37 km/h) | 40.81 mph (65.67 km/h) |
| 45 mph (72.42 km/h) | 45.91 mph (73.88 km/h) |
| 50 mph (80.47 km/h) | 51.01 mph (82.09 km/h) |
| 55 mph (88.51 km/h) | 56.11 mph (90.3 km/h) |
| 60 mph (96.56 km/h) | 61.21 mph (98.51 km/h) |
| 65 mph (104.61 km/h) | 66.31 mph (106.72 km/h) |
| 70 mph (112.65 km/h) | 71.41 mph (114.93 km/h) |
| 75 mph (120.7 km/h) | 76.51 mph (123.14 km/h) |
| 80 mph (128.75 km/h) | 81.61 mph (131.34 km/h) |
| 85 mph (136.79 km/h) | 86.71 mph (139.55 km/h) |
| 90 mph (144.84 km/h) | 91.82 mph (147.76 km/h) |
| 95 mph (152.89 km/h) | 96.92 mph (155.97 km/h) |
| 100 mph (160.93 km/h) | 102.02 mph (164.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1854 | 2154 | 2320 | 2422 | 2533 | 2612 | 2698 | 2801 | 2943 | 3085 | 3243 | 3369 | 3598 | 3850 | 4047 | 4174 | 4245 | 4505 | 4868 | 5657 |
Better Fuel Economy Factory Ratios Increased Power
