Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/45-18 | 215/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.62 (650.7) | 26.46 (672.2) | 0.85 (21.5) 3.3% |
| Width inches (mm) | 8.46 (215) | 8.46 (215) | 0 (0) 0% |
| Circum. inches (mm) | 80.48 (2044.23) | 83.14 (2111.78) | 2.66 (67.54) 3.3% |
| Sidewall Height inches (mm) | 3.81 (96.75) | 4.23 (107.5) | 0.42 (10.75) 11.1% |
| Revolutions per mile (km) | 787.26 (489.18) | 762.08 (473.53) | -25.18 (-15.65) -3.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.66 mph (33.25 km/h) |
| 25 mph (40.23 km/h) | 25.83 mph (41.56 km/h) |
| 30 mph (48.28 km/h) | 30.99 mph (49.88 km/h) |
| 35 mph (56.33 km/h) | 36.16 mph (58.19 km/h) |
| 40 mph (64.37 km/h) | 41.32 mph (66.5 km/h) |
| 45 mph (72.42 km/h) | 46.49 mph (74.81 km/h) |
| 50 mph (80.47 km/h) | 51.65 mph (83.13 km/h) |
| 55 mph (88.51 km/h) | 56.82 mph (91.44 km/h) |
| 60 mph (96.56 km/h) | 61.98 mph (99.75 km/h) |
| 65 mph (104.61 km/h) | 67.15 mph (108.06 km/h) |
| 70 mph (112.65 km/h) | 72.31 mph (116.38 km/h) |
| 75 mph (120.7 km/h) | 77.48 mph (124.69 km/h) |
| 80 mph (128.75 km/h) | 82.64 mph (133 km/h) |
| 85 mph (136.79 km/h) | 87.81 mph (141.31 km/h) |
| 90 mph (144.84 km/h) | 92.97 mph (149.63 km/h) |
| 95 mph (152.89 km/h) | 98.14 mph (157.94 km/h) |
| 100 mph (160.93 km/h) | 103.3 mph (166.25 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
