Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/30-19 | 275/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.2 (665.6) | 27.66 (702.6) | 1.46 (37) 5.6% |
| Width inches (mm) | 12.01 (305) | 10.83 (275) | -1.18 (-30) -9.8% |
| Circum. inches (mm) | 82.32 (2091.04) | 86.9 (2207.28) | 4.58 (116.24) 5.6% |
| Sidewall Height inches (mm) | 3.6 (91.5) | 4.33 (110) | 0.73 (18.5) 20.2% |
| Revolutions per mile (km) | 769.64 (478.23) | 729.11 (453.04) | -40.53 (-25.18) -5.3% |
275/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.11 mph (33.98 km/h) |
| 25 mph (40.23 km/h) | 26.39 mph (42.47 km/h) |
| 30 mph (48.28 km/h) | 31.67 mph (50.96 km/h) |
| 35 mph (56.33 km/h) | 36.95 mph (59.46 km/h) |
| 40 mph (64.37 km/h) | 42.22 mph (67.95 km/h) |
| 45 mph (72.42 km/h) | 47.5 mph (76.45 km/h) |
| 50 mph (80.47 km/h) | 52.78 mph (84.94 km/h) |
| 55 mph (88.51 km/h) | 58.06 mph (93.43 km/h) |
| 60 mph (96.56 km/h) | 63.34 mph (101.93 km/h) |
| 65 mph (104.61 km/h) | 68.61 mph (110.42 km/h) |
| 70 mph (112.65 km/h) | 73.89 mph (118.92 km/h) |
| 75 mph (120.7 km/h) | 79.17 mph (127.41 km/h) |
| 80 mph (128.75 km/h) | 84.45 mph (135.9 km/h) |
| 85 mph (136.79 km/h) | 89.73 mph (144.4 km/h) |
| 90 mph (144.84 km/h) | 95 mph (152.89 km/h) |
| 95 mph (152.89 km/h) | 100.28 mph (161.39 km/h) |
| 100 mph (160.93 km/h) | 105.56 mph (169.88 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
