Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-14 | 245/55-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.09 (535.6) | 24.61 (625.1) | 3.52 (89.5) 16.7% |
| Width inches (mm) | 8.86 (225) | 9.65 (245) | 0.79 (20) 8.9% |
| Circum. inches (mm) | 66.25 (1682.64) | 77.32 (1963.81) | 11.07 (281.17) 16.7% |
| Sidewall Height inches (mm) | 3.54 (90) | 5.31 (134.75) | 1.76 (44.75) 49.7% |
| Revolutions per mile (km) | 956.44 (594.3) | 819.5 (509.21) | -136.94 (-85.09) -14.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.34 mph (37.57 km/h) |
| 25 mph (40.23 km/h) | 29.18 mph (46.96 km/h) |
| 30 mph (48.28 km/h) | 35.01 mph (56.35 km/h) |
| 35 mph (56.33 km/h) | 40.85 mph (65.74 km/h) |
| 40 mph (64.37 km/h) | 46.68 mph (75.13 km/h) |
| 45 mph (72.42 km/h) | 52.52 mph (84.52 km/h) |
| 50 mph (80.47 km/h) | 58.36 mph (93.91 km/h) |
| 55 mph (88.51 km/h) | 64.19 mph (103.3 km/h) |
| 60 mph (96.56 km/h) | 70.03 mph (112.7 km/h) |
| 65 mph (104.61 km/h) | 75.86 mph (122.09 km/h) |
| 70 mph (112.65 km/h) | 81.7 mph (131.48 km/h) |
| 75 mph (120.7 km/h) | 87.53 mph (140.87 km/h) |
| 80 mph (128.75 km/h) | 93.37 mph (150.26 km/h) |
| 85 mph (136.79 km/h) | 99.2 mph (159.65 km/h) |
| 90 mph (144.84 km/h) | 105.04 mph (169.04 km/h) |
| 95 mph (152.89 km/h) | 110.87 mph (178.44 km/h) |
| 100 mph (160.93 km/h) | 116.71 mph (187.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2085 | 2423 | 2609 | 2724 | 2849 | 2937 | 3035 | 3150 | 3310 | 3470 | 3647 | 3789 | 4047 | 4331 | 4553 | 4695 | 4774 | 5067 | 5475 | 6363 |
Better Fuel Economy Factory Ratios Increased Power
