Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-18 | 200/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.77 (629.2) | 24.3 (617.2) | -0.47 (-12) -1.9% |
| Width inches (mm) | 8.46 (215) | 7.87 (200) | -0.59 (-15) -7% |
| Circum. inches (mm) | 77.82 (1976.69) | 76.34 (1938.99) | -1.48 (-37.7) -1.9% |
| Sidewall Height inches (mm) | 3.39 (86) | 3.15 (80) | -0.24 (-6) -7% |
| Revolutions per mile (km) | 814.16 (505.9) | 829.99 (515.73) | 15.83 (9.84) 1.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.62 mph (31.57 km/h) |
| 25 mph (40.23 km/h) | 24.52 mph (39.47 km/h) |
| 30 mph (48.28 km/h) | 29.43 mph (47.36 km/h) |
| 35 mph (56.33 km/h) | 34.33 mph (55.25 km/h) |
| 40 mph (64.37 km/h) | 39.24 mph (63.15 km/h) |
| 45 mph (72.42 km/h) | 44.14 mph (71.04 km/h) |
| 50 mph (80.47 km/h) | 49.05 mph (78.93 km/h) |
| 55 mph (88.51 km/h) | 53.95 mph (86.83 km/h) |
| 60 mph (96.56 km/h) | 58.86 mph (94.72 km/h) |
| 65 mph (104.61 km/h) | 63.76 mph (102.61 km/h) |
| 70 mph (112.65 km/h) | 68.66 mph (110.51 km/h) |
| 75 mph (120.7 km/h) | 73.57 mph (118.4 km/h) |
| 80 mph (128.75 km/h) | 78.47 mph (126.29 km/h) |
| 85 mph (136.79 km/h) | 83.38 mph (134.19 km/h) |
| 90 mph (144.84 km/h) | 88.28 mph (142.08 km/h) |
| 95 mph (152.89 km/h) | 93.19 mph (149.97 km/h) |
| 100 mph (160.93 km/h) | 98.09 mph (157.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2112 | 2454 | 2642 | 2759 | 2885 | 2975 | 3074 | 3191 | 3353 | 3514 | 3694 | 3838 | 4099 | 4386 | 4611 | 4755 | 4836 | 5132 | 5546 | 6444 |
Better Fuel Economy Factory Ratios Increased Power
