Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/60-17 | 215/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.16 (689.8) | 27.31 (693.7) | 0.15 (3.9) 0.6% |
| Width inches (mm) | 8.46 (215) | 8.46 (215) | 0 (0) 0% |
| Circum. inches (mm) | 85.32 (2167.07) | 85.8 (2179.32) | 0.48 (12.25) 0.6% |
| Sidewall Height inches (mm) | 5.08 (129) | 4.66 (118.25) | -0.42 (-10.75) -8.3% |
| Revolutions per mile (km) | 742.64 (461.45) | 738.46 (458.86) | -4.18 (-2.59) -0.6% |
215/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.11 mph (32.37 km/h) |
| 25 mph (40.23 km/h) | 25.14 mph (40.46 km/h) |
| 30 mph (48.28 km/h) | 30.17 mph (48.55 km/h) |
| 35 mph (56.33 km/h) | 35.2 mph (56.65 km/h) |
| 40 mph (64.37 km/h) | 40.23 mph (64.74 km/h) |
| 45 mph (72.42 km/h) | 45.25 mph (72.83 km/h) |
| 50 mph (80.47 km/h) | 50.28 mph (80.92 km/h) |
| 55 mph (88.51 km/h) | 55.31 mph (89.01 km/h) |
| 60 mph (96.56 km/h) | 60.34 mph (97.11 km/h) |
| 65 mph (104.61 km/h) | 65.37 mph (105.2 km/h) |
| 70 mph (112.65 km/h) | 70.4 mph (113.29 km/h) |
| 75 mph (120.7 km/h) | 75.42 mph (121.38 km/h) |
| 80 mph (128.75 km/h) | 80.45 mph (129.48 km/h) |
| 85 mph (136.79 km/h) | 85.48 mph (137.57 km/h) |
| 90 mph (144.84 km/h) | 90.51 mph (145.66 km/h) |
| 95 mph (152.89 km/h) | 95.54 mph (153.75 km/h) |
| 100 mph (160.93 km/h) | 100.57 mph (161.84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1879 | 2183 | 2351 | 2455 | 2567 | 2647 | 2735 | 2839 | 2983 | 3127 | 3287 | 3415 | 3647 | 3902 | 4102 | 4230 | 4302 | 4566 | 4934 | 5734 |
Better Fuel Economy Factory Ratios Increased Power
