Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/45-18 | 275/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.68 (677.7) | 27.66 (702.6) | 0.98 (24.9) 3.7% |
| Width inches (mm) | 9.65 (245) | 10.83 (275) | 1.18 (30) 12.2% |
| Circum. inches (mm) | 83.82 (2129.06) | 86.9 (2207.28) | 3.08 (78.23) 3.7% |
| Sidewall Height inches (mm) | 4.34 (110.25) | 4.33 (110) | -0.01 (-0.25) -0.2% |
| Revolutions per mile (km) | 755.9 (469.69) | 729.11 (453.04) | -26.79 (-16.65) -3.5% |
275/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.73 mph (33.37 km/h) |
| 25 mph (40.23 km/h) | 25.92 mph (41.71 km/h) |
| 30 mph (48.28 km/h) | 31.1 mph (50.05 km/h) |
| 35 mph (56.33 km/h) | 36.29 mph (58.4 km/h) |
| 40 mph (64.37 km/h) | 41.47 mph (66.74 km/h) |
| 45 mph (72.42 km/h) | 46.65 mph (75.08 km/h) |
| 50 mph (80.47 km/h) | 51.84 mph (83.42 km/h) |
| 55 mph (88.51 km/h) | 57.02 mph (91.77 km/h) |
| 60 mph (96.56 km/h) | 62.2 mph (100.11 km/h) |
| 65 mph (104.61 km/h) | 67.39 mph (108.45 km/h) |
| 70 mph (112.65 km/h) | 72.57 mph (116.79 km/h) |
| 75 mph (120.7 km/h) | 77.76 mph (125.14 km/h) |
| 80 mph (128.75 km/h) | 82.94 mph (133.48 km/h) |
| 85 mph (136.79 km/h) | 88.12 mph (141.82 km/h) |
| 90 mph (144.84 km/h) | 93.31 mph (150.16 km/h) |
| 95 mph (152.89 km/h) | 98.49 mph (158.51 km/h) |
| 100 mph (160.93 km/h) | 103.67 mph (166.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1855 | 2155 | 2321 | 2424 | 2534 | 2613 | 2700 | 2803 | 2945 | 3087 | 3245 | 3371 | 3600 | 3853 | 4050 | 4177 | 4248 | 4508 | 4872 | 5661 |
Better Fuel Economy Factory Ratios Increased Power
