Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/30-19 | 325/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.68 (677.6) | 29.24 (742.6) | 2.56 (65) 9.6% |
| Width inches (mm) | 12.8 (325) | 12.8 (325) | 0 (0) 0% |
| Circum. inches (mm) | 83.81 (2128.74) | 91.85 (2332.95) | 8.04 (204.2) 9.6% |
| Sidewall Height inches (mm) | 3.84 (97.5) | 5.12 (130) | 1.28 (32.5) 33.3% |
| Revolutions per mile (km) | 756.01 (469.76) | 689.83 (428.64) | -66.17 (-41.12) -8.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.92 mph (35.27 km/h) |
| 25 mph (40.23 km/h) | 27.4 mph (44.09 km/h) |
| 30 mph (48.28 km/h) | 32.88 mph (52.91 km/h) |
| 35 mph (56.33 km/h) | 38.36 mph (61.73 km/h) |
| 40 mph (64.37 km/h) | 43.84 mph (70.55 km/h) |
| 45 mph (72.42 km/h) | 49.32 mph (79.37 km/h) |
| 50 mph (80.47 km/h) | 54.8 mph (88.19 km/h) |
| 55 mph (88.51 km/h) | 60.28 mph (97 km/h) |
| 60 mph (96.56 km/h) | 65.76 mph (105.82 km/h) |
| 65 mph (104.61 km/h) | 71.24 mph (114.64 km/h) |
| 70 mph (112.65 km/h) | 76.71 mph (123.46 km/h) |
| 75 mph (120.7 km/h) | 82.19 mph (132.28 km/h) |
| 80 mph (128.75 km/h) | 87.67 mph (141.1 km/h) |
| 85 mph (136.79 km/h) | 93.15 mph (149.92 km/h) |
| 90 mph (144.84 km/h) | 98.63 mph (158.74 km/h) |
| 95 mph (152.89 km/h) | 104.11 mph (167.55 km/h) |
| 100 mph (160.93 km/h) | 109.59 mph (176.37 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
