Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/55-18 | 215/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.88 (682.7) | 26.46 (672.2) | -0.41 (-10.5) -1.5% |
| Width inches (mm) | 8.07 (205) | 8.46 (215) | 0.39 (10) 4.9% |
| Circum. inches (mm) | 84.44 (2144.77) | 83.14 (2111.78) | -1.3 (-32.99) -1.5% |
| Sidewall Height inches (mm) | 4.44 (112.75) | 4.23 (107.5) | -0.21 (-5.25) -4.7% |
| Revolutions per mile (km) | 750.36 (466.25) | 762.08 (473.53) | 11.72 (7.28) 1.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.69 mph (31.69 km/h) |
| 25 mph (40.23 km/h) | 24.62 mph (39.61 km/h) |
| 30 mph (48.28 km/h) | 29.54 mph (47.54 km/h) |
| 35 mph (56.33 km/h) | 34.46 mph (55.46 km/h) |
| 40 mph (64.37 km/h) | 39.38 mph (63.38 km/h) |
| 45 mph (72.42 km/h) | 44.31 mph (71.31 km/h) |
| 50 mph (80.47 km/h) | 49.23 mph (79.23 km/h) |
| 55 mph (88.51 km/h) | 54.15 mph (87.15 km/h) |
| 60 mph (96.56 km/h) | 59.08 mph (95.08 km/h) |
| 65 mph (104.61 km/h) | 64 mph (103 km/h) |
| 70 mph (112.65 km/h) | 68.92 mph (110.92 km/h) |
| 75 mph (120.7 km/h) | 73.85 mph (118.84 km/h) |
| 80 mph (128.75 km/h) | 78.77 mph (126.77 km/h) |
| 85 mph (136.79 km/h) | 83.69 mph (134.69 km/h) |
| 90 mph (144.84 km/h) | 88.62 mph (142.61 km/h) |
| 95 mph (152.89 km/h) | 93.54 mph (150.54 km/h) |
| 100 mph (160.93 km/h) | 98.46 mph (158.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1939 | 2253 | 2426 | 2534 | 2649 | 2732 | 2822 | 2930 | 3078 | 3227 | 3392 | 3524 | 3763 | 4027 | 4234 | 4366 | 4440 | 4712 | 5092 | 5917 |
Better Fuel Economy Factory Ratios Increased Power
