Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/40-18 | 215/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.46 (621.2) | 24.77 (629.2) | 0.31 (8) 1.3% |
| Width inches (mm) | 8.07 (205) | 8.46 (215) | 0.39 (10) 4.9% |
| Circum. inches (mm) | 76.83 (1951.56) | 77.82 (1976.69) | 0.99 (25.13) 1.3% |
| Sidewall Height inches (mm) | 3.23 (82) | 3.39 (86) | 0.16 (4) 4.9% |
| Revolutions per mile (km) | 824.65 (512.41) | 814.16 (505.9) | -10.49 (-6.52) -1.3% |
215/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.26 mph (32.6 km/h) |
| 25 mph (40.23 km/h) | 25.32 mph (40.75 km/h) |
| 30 mph (48.28 km/h) | 30.39 mph (48.9 km/h) |
| 35 mph (56.33 km/h) | 35.45 mph (57.05 km/h) |
| 40 mph (64.37 km/h) | 40.52 mph (65.2 km/h) |
| 45 mph (72.42 km/h) | 45.58 mph (73.35 km/h) |
| 50 mph (80.47 km/h) | 50.64 mph (81.5 km/h) |
| 55 mph (88.51 km/h) | 55.71 mph (89.65 km/h) |
| 60 mph (96.56 km/h) | 60.77 mph (97.8 km/h) |
| 65 mph (104.61 km/h) | 65.84 mph (105.95 km/h) |
| 70 mph (112.65 km/h) | 70.9 mph (114.11 km/h) |
| 75 mph (120.7 km/h) | 75.97 mph (122.26 km/h) |
| 80 mph (128.75 km/h) | 81.03 mph (130.41 km/h) |
| 85 mph (136.79 km/h) | 86.09 mph (138.56 km/h) |
| 90 mph (144.84 km/h) | 91.16 mph (146.71 km/h) |
| 95 mph (152.89 km/h) | 96.22 mph (154.86 km/h) |
| 100 mph (160.93 km/h) | 101.29 mph (163.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2072 | 2407 | 2592 | 2707 | 2830 | 2918 | 3015 | 3130 | 3289 | 3447 | 3624 | 3765 | 4020 | 4302 | 4523 | 4664 | 4743 | 5034 | 5440 | 6321 |
Better Fuel Economy Factory Ratios Increased Power
