Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-14 | 155/40-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.09 (535.6) | 18.88 (479.6) | -2.2 (-56) -10.5% |
| Width inches (mm) | 8.86 (225) | 6.1 (155) | -2.76 (-70) -31.1% |
| Circum. inches (mm) | 66.25 (1682.64) | 59.32 (1506.71) | -6.93 (-175.93) -10.5% |
| Sidewall Height inches (mm) | 3.54 (90) | 2.44 (62) | -1.1 (-28) -31.1% |
| Revolutions per mile (km) | 956.44 (594.3) | 1068.12 (663.7) | 111.68 (69.39) 11.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.91 mph (28.82 km/h) |
| 25 mph (40.23 km/h) | 22.39 mph (36.03 km/h) |
| 30 mph (48.28 km/h) | 26.86 mph (43.23 km/h) |
| 35 mph (56.33 km/h) | 31.34 mph (50.44 km/h) |
| 40 mph (64.37 km/h) | 35.82 mph (57.64 km/h) |
| 45 mph (72.42 km/h) | 40.29 mph (64.85 km/h) |
| 50 mph (80.47 km/h) | 44.77 mph (72.05 km/h) |
| 55 mph (88.51 km/h) | 49.25 mph (79.26 km/h) |
| 60 mph (96.56 km/h) | 53.73 mph (86.46 km/h) |
| 65 mph (104.61 km/h) | 58.2 mph (93.67 km/h) |
| 70 mph (112.65 km/h) | 62.68 mph (100.88 km/h) |
| 75 mph (120.7 km/h) | 67.16 mph (108.08 km/h) |
| 80 mph (128.75 km/h) | 71.64 mph (115.29 km/h) |
| 85 mph (136.79 km/h) | 76.11 mph (122.49 km/h) |
| 90 mph (144.84 km/h) | 80.59 mph (129.7 km/h) |
| 95 mph (152.89 km/h) | 85.07 mph (136.9 km/h) |
| 100 mph (160.93 km/h) | 89.54 mph (144.11 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
