Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/55-18 | 225/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.31 (693.7) | 28.63 (727.2) | 1.32 (33.5) 4.8% |
| Width inches (mm) | 8.46 (215) | 8.86 (225) | 0.39 (10) 4.7% |
| Circum. inches (mm) | 85.8 (2179.32) | 89.94 (2284.57) | 4.14 (105.24) 4.8% |
| Sidewall Height inches (mm) | 4.66 (118.25) | 5.31 (135) | 0.66 (16.75) 14.2% |
| Revolutions per mile (km) | 738.46 (458.86) | 704.44 (437.72) | -34.02 (-21.14) -4.6% |
225/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.97 mph (33.74 km/h) |
| 25 mph (40.23 km/h) | 26.21 mph (42.18 km/h) |
| 30 mph (48.28 km/h) | 31.45 mph (50.61 km/h) |
| 35 mph (56.33 km/h) | 36.69 mph (59.05 km/h) |
| 40 mph (64.37 km/h) | 41.93 mph (67.48 km/h) |
| 45 mph (72.42 km/h) | 47.17 mph (75.92 km/h) |
| 50 mph (80.47 km/h) | 52.41 mph (84.35 km/h) |
| 55 mph (88.51 km/h) | 57.66 mph (92.79 km/h) |
| 60 mph (96.56 km/h) | 62.9 mph (101.22 km/h) |
| 65 mph (104.61 km/h) | 68.14 mph (109.66 km/h) |
| 70 mph (112.65 km/h) | 73.38 mph (118.09 km/h) |
| 75 mph (120.7 km/h) | 78.62 mph (126.53 km/h) |
| 80 mph (128.75 km/h) | 83.86 mph (134.97 km/h) |
| 85 mph (136.79 km/h) | 89.1 mph (143.4 km/h) |
| 90 mph (144.84 km/h) | 94.35 mph (151.84 km/h) |
| 95 mph (152.89 km/h) | 99.59 mph (160.27 km/h) |
| 100 mph (160.93 km/h) | 104.83 mph (168.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1793 | 2083 | 2243 | 2342 | 2449 | 2525 | 2609 | 2708 | 2845 | 2983 | 3135 | 3257 | 3479 | 3723 | 3913 | 4035 | 4104 | 4356 | 4707 | 5470 |
Better Fuel Economy Factory Ratios Increased Power
