Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/30-19 | 305/30-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.5 (647.6) | 26.2 (665.6) | 0.71 (18) 2.8% |
| Width inches (mm) | 10.83 (275) | 12.01 (305) | 1.18 (30) 10.9% |
| Circum. inches (mm) | 80.1 (2034.5) | 82.32 (2091.04) | 2.23 (56.55) 2.8% |
| Sidewall Height inches (mm) | 3.25 (82.5) | 3.6 (91.5) | 0.35 (9) 10.9% |
| Revolutions per mile (km) | 791.03 (491.52) | 769.64 (478.23) | -21.39 (-13.29) -2.7% |
305/30-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.56 mph (33.08 km/h) |
| 25 mph (40.23 km/h) | 25.69 mph (41.35 km/h) |
| 30 mph (48.28 km/h) | 30.83 mph (49.62 km/h) |
| 35 mph (56.33 km/h) | 35.97 mph (57.89 km/h) |
| 40 mph (64.37 km/h) | 41.11 mph (66.16 km/h) |
| 45 mph (72.42 km/h) | 46.25 mph (74.43 km/h) |
| 50 mph (80.47 km/h) | 51.39 mph (82.7 km/h) |
| 55 mph (88.51 km/h) | 56.53 mph (90.97 km/h) |
| 60 mph (96.56 km/h) | 61.67 mph (99.24 km/h) |
| 65 mph (104.61 km/h) | 66.81 mph (107.52 km/h) |
| 70 mph (112.65 km/h) | 71.95 mph (115.79 km/h) |
| 75 mph (120.7 km/h) | 77.08 mph (124.06 km/h) |
| 80 mph (128.75 km/h) | 82.22 mph (132.33 km/h) |
| 85 mph (136.79 km/h) | 87.36 mph (140.6 km/h) |
| 90 mph (144.84 km/h) | 92.5 mph (148.87 km/h) |
| 95 mph (152.89 km/h) | 97.64 mph (157.14 km/h) |
| 100 mph (160.93 km/h) | 102.78 mph (165.41 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1959 | 2275 | 2450 | 2559 | 2675 | 2759 | 2850 | 2959 | 3109 | 3259 | 3425 | 3559 | 3800 | 4067 | 4276 | 4409 | 4484 | 4759 | 5142 | 5976 |
Better Fuel Economy Factory Ratios Increased Power
