Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/30-14 | 225/40-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.31 (490.6) | 21.09 (535.6) | 1.77 (45) 9.2% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 60.68 (1541.27) | 66.25 (1682.64) | 5.57 (141.37) 9.2% |
| Sidewall Height inches (mm) | 2.66 (67.5) | 3.54 (90) | 0.89 (22.5) 33.3% |
| Revolutions per mile (km) | 1044.17 (648.82) | 956.44 (594.3) | -87.73 (-54.51) -8.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.83 mph (35.14 km/h) |
| 25 mph (40.23 km/h) | 27.29 mph (43.92 km/h) |
| 30 mph (48.28 km/h) | 32.75 mph (52.71 km/h) |
| 35 mph (56.33 km/h) | 38.21 mph (61.49 km/h) |
| 40 mph (64.37 km/h) | 43.67 mph (70.28 km/h) |
| 45 mph (72.42 km/h) | 49.13 mph (79.06 km/h) |
| 50 mph (80.47 km/h) | 54.59 mph (87.85 km/h) |
| 55 mph (88.51 km/h) | 60.04 mph (96.63 km/h) |
| 60 mph (96.56 km/h) | 65.5 mph (105.42 km/h) |
| 65 mph (104.61 km/h) | 70.96 mph (114.2 km/h) |
| 70 mph (112.65 km/h) | 76.42 mph (122.99 km/h) |
| 75 mph (120.7 km/h) | 81.88 mph (131.77 km/h) |
| 80 mph (128.75 km/h) | 87.34 mph (140.56 km/h) |
| 85 mph (136.79 km/h) | 92.8 mph (149.34 km/h) |
| 90 mph (144.84 km/h) | 98.26 mph (158.13 km/h) |
| 95 mph (152.89 km/h) | 103.71 mph (166.91 km/h) |
| 100 mph (160.93 km/h) | 109.17 mph (175.7 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
