Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/30-19 | 325/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.15 (689.6) | 29.24 (742.6) | 2.09 (53) 7.7% |
| Width inches (mm) | 13.58 (345) | 12.8 (325) | -0.79 (-20) -5.8% |
| Circum. inches (mm) | 85.29 (2166.44) | 91.85 (2332.95) | 6.56 (166.5) 7.7% |
| Sidewall Height inches (mm) | 4.07 (103.5) | 5.12 (130) | 1.04 (26.5) 25.6% |
| Revolutions per mile (km) | 742.85 (461.59) | 689.83 (428.64) | -53.02 (-32.94) -7.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.54 mph (34.66 km/h) |
| 25 mph (40.23 km/h) | 26.92 mph (43.33 km/h) |
| 30 mph (48.28 km/h) | 32.31 mph (51.99 km/h) |
| 35 mph (56.33 km/h) | 37.69 mph (60.66 km/h) |
| 40 mph (64.37 km/h) | 43.07 mph (69.32 km/h) |
| 45 mph (72.42 km/h) | 48.46 mph (77.99 km/h) |
| 50 mph (80.47 km/h) | 53.84 mph (86.65 km/h) |
| 55 mph (88.51 km/h) | 59.23 mph (95.32 km/h) |
| 60 mph (96.56 km/h) | 64.61 mph (103.98 km/h) |
| 65 mph (104.61 km/h) | 70 mph (112.65 km/h) |
| 70 mph (112.65 km/h) | 75.38 mph (121.31 km/h) |
| 75 mph (120.7 km/h) | 80.76 mph (129.98 km/h) |
| 80 mph (128.75 km/h) | 86.15 mph (138.64 km/h) |
| 85 mph (136.79 km/h) | 91.53 mph (147.31 km/h) |
| 90 mph (144.84 km/h) | 96.92 mph (155.97 km/h) |
| 95 mph (152.89 km/h) | 102.3 mph (164.64 km/h) |
| 100 mph (160.93 km/h) | 107.69 mph (173.3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1755 | 2039 | 2196 | 2293 | 2398 | 2473 | 2555 | 2652 | 2786 | 2921 | 3070 | 3190 | 3406 | 3645 | 3832 | 3952 | 4019 | 4265 | 4609 | 5356 |
Better Fuel Economy Factory Ratios Increased Power
