Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-15 | 225/40-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.77 (553) | 21.09 (535.6) | -0.69 (-17.4) -3.1% |
| Width inches (mm) | 8.46 (215) | 8.86 (225) | 0.39 (10) 4.7% |
| Circum. inches (mm) | 68.4 (1737.3) | 66.25 (1682.64) | -2.15 (-54.66) -3.1% |
| Sidewall Height inches (mm) | 3.39 (86) | 3.54 (90) | 0.16 (4) 4.7% |
| Revolutions per mile (km) | 926.35 (575.6) | 956.44 (594.3) | 30.09 (18.7) 3.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.37 mph (31.17 km/h) |
| 25 mph (40.23 km/h) | 24.21 mph (38.97 km/h) |
| 30 mph (48.28 km/h) | 29.06 mph (46.76 km/h) |
| 35 mph (56.33 km/h) | 33.9 mph (54.55 km/h) |
| 40 mph (64.37 km/h) | 38.74 mph (62.35 km/h) |
| 45 mph (72.42 km/h) | 43.58 mph (70.14 km/h) |
| 50 mph (80.47 km/h) | 48.43 mph (77.94 km/h) |
| 55 mph (88.51 km/h) | 53.27 mph (85.73 km/h) |
| 60 mph (96.56 km/h) | 58.11 mph (93.52 km/h) |
| 65 mph (104.61 km/h) | 62.95 mph (101.32 km/h) |
| 70 mph (112.65 km/h) | 67.8 mph (109.11 km/h) |
| 75 mph (120.7 km/h) | 72.64 mph (116.9 km/h) |
| 80 mph (128.75 km/h) | 77.48 mph (124.7 km/h) |
| 85 mph (136.79 km/h) | 82.33 mph (132.49 km/h) |
| 90 mph (144.84 km/h) | 87.17 mph (140.28 km/h) |
| 95 mph (152.89 km/h) | 92.01 mph (148.08 km/h) |
| 100 mph (160.93 km/h) | 96.85 mph (155.87 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
