Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-19 | 305/35-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.98 (710.6) | 27.41 (696.1) | -0.57 (-14.5) -2% |
| Width inches (mm) | 11.22 (285) | 12.01 (305) | 0.79 (20) 7% |
| Circum. inches (mm) | 87.89 (2232.42) | 86.1 (2186.86) | -1.79 (-45.55) -2% |
| Sidewall Height inches (mm) | 4.49 (114) | 4.2 (106.75) | -0.29 (-7.25) -6.4% |
| Revolutions per mile (km) | 720.9 (447.94) | 735.91 (457.28) | 15.02 (9.33) 2.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.59 mph (31.53 km/h) |
| 25 mph (40.23 km/h) | 24.49 mph (39.41 km/h) |
| 30 mph (48.28 km/h) | 29.39 mph (47.3 km/h) |
| 35 mph (56.33 km/h) | 34.29 mph (55.18 km/h) |
| 40 mph (64.37 km/h) | 39.18 mph (63.06 km/h) |
| 45 mph (72.42 km/h) | 44.08 mph (70.94 km/h) |
| 50 mph (80.47 km/h) | 48.98 mph (78.83 km/h) |
| 55 mph (88.51 km/h) | 53.88 mph (86.71 km/h) |
| 60 mph (96.56 km/h) | 58.78 mph (94.59 km/h) |
| 65 mph (104.61 km/h) | 63.67 mph (102.47 km/h) |
| 70 mph (112.65 km/h) | 68.57 mph (110.36 km/h) |
| 75 mph (120.7 km/h) | 73.47 mph (118.24 km/h) |
| 80 mph (128.75 km/h) | 78.37 mph (126.12 km/h) |
| 85 mph (136.79 km/h) | 83.27 mph (134 km/h) |
| 90 mph (144.84 km/h) | 88.16 mph (141.89 km/h) |
| 95 mph (152.89 km/h) | 93.06 mph (149.77 km/h) |
| 100 mph (160.93 km/h) | 97.96 mph (157.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1873 | 2176 | 2343 | 2447 | 2558 | 2638 | 2725 | 2829 | 2973 | 3116 | 3275 | 3403 | 3634 | 3889 | 4088 | 4216 | 4287 | 4550 | 4917 | 5714 |
Better Fuel Economy Factory Ratios Increased Power
