Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-14 | 285/40-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.09 (535.6) | 22.98 (583.6) | 1.89 (48) 9% |
| Width inches (mm) | 8.86 (225) | 11.22 (285) | 2.36 (60) 26.7% |
| Circum. inches (mm) | 66.25 (1682.64) | 72.18 (1833.43) | 5.94 (150.8) 9% |
| Sidewall Height inches (mm) | 3.54 (90) | 4.49 (114) | 0.94 (24) 26.7% |
| Revolutions per mile (km) | 956.44 (594.3) | 877.78 (545.42) | -78.67 (-48.88) -8.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.79 mph (35.07 km/h) |
| 25 mph (40.23 km/h) | 27.24 mph (43.84 km/h) |
| 30 mph (48.28 km/h) | 32.69 mph (52.61 km/h) |
| 35 mph (56.33 km/h) | 38.14 mph (61.38 km/h) |
| 40 mph (64.37 km/h) | 43.58 mph (70.14 km/h) |
| 45 mph (72.42 km/h) | 49.03 mph (78.91 km/h) |
| 50 mph (80.47 km/h) | 54.48 mph (87.68 km/h) |
| 55 mph (88.51 km/h) | 59.93 mph (96.45 km/h) |
| 60 mph (96.56 km/h) | 65.38 mph (105.21 km/h) |
| 65 mph (104.61 km/h) | 70.83 mph (113.98 km/h) |
| 70 mph (112.65 km/h) | 76.27 mph (122.75 km/h) |
| 75 mph (120.7 km/h) | 81.72 mph (131.52 km/h) |
| 80 mph (128.75 km/h) | 87.17 mph (140.29 km/h) |
| 85 mph (136.79 km/h) | 92.62 mph (149.05 km/h) |
| 90 mph (144.84 km/h) | 98.07 mph (157.82 km/h) |
| 95 mph (152.89 km/h) | 103.51 mph (166.59 km/h) |
| 100 mph (160.93 km/h) | 108.96 mph (175.36 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2234 | 2595 | 2795 | 2918 | 3051 | 3146 | 3251 | 3374 | 3546 | 3717 | 3907 | 4059 | 4334 | 4639 | 4876 | 5028 | 5114 | 5428 | 5865 | 6815 |
Better Fuel Economy Factory Ratios Increased Power
