Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/60-18 | 215/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.69 (703.2) | 27.31 (693.7) | -0.37 (-9.5) -1.4% |
| Width inches (mm) | 8.07 (205) | 8.46 (215) | 0.39 (10) 4.9% |
| Circum. inches (mm) | 86.98 (2209.17) | 85.8 (2179.32) | -1.18 (-29.85) -1.4% |
| Sidewall Height inches (mm) | 4.84 (123) | 4.66 (118.25) | -0.19 (-4.75) -3.9% |
| Revolutions per mile (km) | 728.48 (452.66) | 738.46 (458.86) | 9.98 (6.2) 1.4% |
215/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.73 mph (31.75 km/h) |
| 25 mph (40.23 km/h) | 24.66 mph (39.69 km/h) |
| 30 mph (48.28 km/h) | 29.59 mph (47.63 km/h) |
| 35 mph (56.33 km/h) | 34.53 mph (55.57 km/h) |
| 40 mph (64.37 km/h) | 39.46 mph (63.5 km/h) |
| 45 mph (72.42 km/h) | 44.39 mph (71.44 km/h) |
| 50 mph (80.47 km/h) | 49.32 mph (79.38 km/h) |
| 55 mph (88.51 km/h) | 54.26 mph (87.32 km/h) |
| 60 mph (96.56 km/h) | 59.19 mph (95.26 km/h) |
| 65 mph (104.61 km/h) | 64.12 mph (103.19 km/h) |
| 70 mph (112.65 km/h) | 69.05 mph (111.13 km/h) |
| 75 mph (120.7 km/h) | 73.99 mph (119.07 km/h) |
| 80 mph (128.75 km/h) | 78.92 mph (127.01 km/h) |
| 85 mph (136.79 km/h) | 83.85 mph (134.95 km/h) |
| 90 mph (144.84 km/h) | 88.78 mph (142.88 km/h) |
| 95 mph (152.89 km/h) | 93.72 mph (150.82 km/h) |
| 100 mph (160.93 km/h) | 98.65 mph (158.76 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
