Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-14 | 205/30-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.09 (535.6) | 18.84 (478.6) | -2.24 (-57) -10.6% |
| Width inches (mm) | 8.86 (225) | 8.07 (205) | -0.79 (-20) -8.9% |
| Circum. inches (mm) | 66.25 (1682.64) | 59.2 (1503.57) | -7.05 (-179.07) -10.6% |
| Sidewall Height inches (mm) | 3.54 (90) | 2.42 (61.5) | -1.12 (-28.5) -31.7% |
| Revolutions per mile (km) | 956.44 (594.3) | 1070.35 (665.08) | 113.91 (70.78) 11.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.87 mph (28.76 km/h) |
| 25 mph (40.23 km/h) | 22.34 mph (35.95 km/h) |
| 30 mph (48.28 km/h) | 26.81 mph (43.14 km/h) |
| 35 mph (56.33 km/h) | 31.28 mph (50.33 km/h) |
| 40 mph (64.37 km/h) | 35.74 mph (57.52 km/h) |
| 45 mph (72.42 km/h) | 40.21 mph (64.71 km/h) |
| 50 mph (80.47 km/h) | 44.68 mph (71.9 km/h) |
| 55 mph (88.51 km/h) | 49.15 mph (79.09 km/h) |
| 60 mph (96.56 km/h) | 53.61 mph (86.28 km/h) |
| 65 mph (104.61 km/h) | 58.08 mph (93.47 km/h) |
| 70 mph (112.65 km/h) | 62.55 mph (100.67 km/h) |
| 75 mph (120.7 km/h) | 67.02 mph (107.86 km/h) |
| 80 mph (128.75 km/h) | 71.49 mph (115.05 km/h) |
| 85 mph (136.79 km/h) | 75.95 mph (122.24 km/h) |
| 90 mph (144.84 km/h) | 80.42 mph (129.43 km/h) |
| 95 mph (152.89 km/h) | 84.89 mph (136.62 km/h) |
| 100 mph (160.93 km/h) | 89.36 mph (143.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
