Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/80-15 | 34/10.5-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.47 (901) | 33.98 (863.04) | -1.49 (-37.96) -4.2% |
| Width inches (mm) | 12.8 (325) | 10.51 (267) | -2.28 (-58) -17.8% |
| Circum. inches (mm) | 111.44 (2830.57) | 106.74 (2711.32) | -4.7 (-119.25) -4.2% |
| Sidewall Height inches (mm) | 10.24 (260) | 7.99 (202.92) | -2.25 (-57.08) -22% |
| Revolutions per mile (km) | 568.56 (353.28) | 593.56 (368.82) | 25.01 (15.54) 4.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.16 mph (30.83 km/h) |
| 25 mph (40.23 km/h) | 23.95 mph (38.54 km/h) |
| 30 mph (48.28 km/h) | 28.74 mph (46.25 km/h) |
| 35 mph (56.33 km/h) | 33.53 mph (53.95 km/h) |
| 40 mph (64.37 km/h) | 38.31 mph (61.66 km/h) |
| 45 mph (72.42 km/h) | 43.1 mph (69.37 km/h) |
| 50 mph (80.47 km/h) | 47.89 mph (77.08 km/h) |
| 55 mph (88.51 km/h) | 52.68 mph (84.78 km/h) |
| 60 mph (96.56 km/h) | 57.47 mph (92.49 km/h) |
| 65 mph (104.61 km/h) | 62.26 mph (100.2 km/h) |
| 70 mph (112.65 km/h) | 67.05 mph (107.91 km/h) |
| 75 mph (120.7 km/h) | 71.84 mph (115.62 km/h) |
| 80 mph (128.75 km/h) | 76.63 mph (123.32 km/h) |
| 85 mph (136.79 km/h) | 81.42 mph (131.03 km/h) |
| 90 mph (144.84 km/h) | 86.21 mph (138.74 km/h) |
| 95 mph (152.89 km/h) | 91 mph (146.45 km/h) |
| 100 mph (160.93 km/h) | 95.79 mph (154.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1511 | 1755 | 1890 | 1973 | 2063 | 2128 | 2198 | 2282 | 2398 | 2513 | 2642 | 2745 | 2931 | 3137 | 3297 | 3400 | 3458 | 3670 | 3966 | 4609 |
Better Fuel Economy Factory Ratios Increased Power
