Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/40-19 | 285/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.66 (702.6) | 27.98 (710.6) | 0.31 (8) 1.1% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 86.9 (2207.28) | 87.89 (2232.42) | 0.99 (25.13) 1.1% |
| Sidewall Height inches (mm) | 4.33 (110) | 4.49 (114) | 0.16 (4) 3.6% |
| Revolutions per mile (km) | 729.11 (453.04) | 720.9 (447.94) | -8.21 (-5.1) -1.1% |
285/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.23 mph (32.55 km/h) |
| 25 mph (40.23 km/h) | 25.28 mph (40.69 km/h) |
| 30 mph (48.28 km/h) | 30.34 mph (48.83 km/h) |
| 35 mph (56.33 km/h) | 35.4 mph (56.97 km/h) |
| 40 mph (64.37 km/h) | 40.46 mph (65.11 km/h) |
| 45 mph (72.42 km/h) | 45.51 mph (73.25 km/h) |
| 50 mph (80.47 km/h) | 50.57 mph (81.38 km/h) |
| 55 mph (88.51 km/h) | 55.63 mph (89.52 km/h) |
| 60 mph (96.56 km/h) | 60.68 mph (97.66 km/h) |
| 65 mph (104.61 km/h) | 65.74 mph (105.8 km/h) |
| 70 mph (112.65 km/h) | 70.8 mph (113.94 km/h) |
| 75 mph (120.7 km/h) | 75.85 mph (122.08 km/h) |
| 80 mph (128.75 km/h) | 80.91 mph (130.21 km/h) |
| 85 mph (136.79 km/h) | 85.97 mph (138.35 km/h) |
| 90 mph (144.84 km/h) | 91.02 mph (146.49 km/h) |
| 95 mph (152.89 km/h) | 96.08 mph (154.63 km/h) |
| 100 mph (160.93 km/h) | 101.14 mph (162.77 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1835 | 2131 | 2295 | 2397 | 2506 | 2584 | 2670 | 2771 | 2912 | 3052 | 3209 | 3333 | 3560 | 3810 | 4005 | 4130 | 4200 | 4458 | 4817 | 5597 |
Better Fuel Economy Factory Ratios Increased Power
