Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/55-16 | 225/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.88 (631.9) | 27.74 (704.7) | 2.87 (72.8) 11.5% |
| Width inches (mm) | 8.07 (205) | 8.86 (225) | 0.79 (20) 9.8% |
| Circum. inches (mm) | 78.16 (1985.17) | 87.16 (2213.88) | 9 (228.71) 11.5% |
| Sidewall Height inches (mm) | 4.44 (112.75) | 4.87 (123.75) | 0.43 (11) 9.8% |
| Revolutions per mile (km) | 810.68 (503.73) | 726.93 (451.69) | -83.75 (-52.04) -10.3% |
225/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.3 mph (35.9 km/h) |
| 25 mph (40.23 km/h) | 27.88 mph (44.87 km/h) |
| 30 mph (48.28 km/h) | 33.46 mph (53.84 km/h) |
| 35 mph (56.33 km/h) | 39.03 mph (62.82 km/h) |
| 40 mph (64.37 km/h) | 44.61 mph (71.79 km/h) |
| 45 mph (72.42 km/h) | 50.18 mph (80.76 km/h) |
| 50 mph (80.47 km/h) | 55.76 mph (89.74 km/h) |
| 55 mph (88.51 km/h) | 61.34 mph (98.71 km/h) |
| 60 mph (96.56 km/h) | 66.91 mph (107.69 km/h) |
| 65 mph (104.61 km/h) | 72.49 mph (116.66 km/h) |
| 70 mph (112.65 km/h) | 78.06 mph (125.63 km/h) |
| 75 mph (120.7 km/h) | 83.64 mph (134.61 km/h) |
| 80 mph (128.75 km/h) | 89.22 mph (143.58 km/h) |
| 85 mph (136.79 km/h) | 94.79 mph (152.55 km/h) |
| 90 mph (144.84 km/h) | 100.37 mph (161.53 km/h) |
| 95 mph (152.89 km/h) | 105.94 mph (170.5 km/h) |
| 100 mph (160.93 km/h) | 111.52 mph (179.48 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1850 | 2149 | 2314 | 2417 | 2527 | 2606 | 2692 | 2795 | 2936 | 3078 | 3235 | 3361 | 3590 | 3842 | 4038 | 4164 | 4235 | 4495 | 4857 | 5644 |
Better Fuel Economy Factory Ratios Increased Power
