Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-20 | 215/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.09 (688) | 26.77 (680) | -0.31 (-8) -1.2% |
| Width inches (mm) | 8.86 (225) | 8.46 (215) | -0.39 (-10) -4.4% |
| Circum. inches (mm) | 85.1 (2161.42) | 84.11 (2136.28) | -0.99 (-25.13) -1.2% |
| Sidewall Height inches (mm) | 3.54 (90) | 3.39 (86) | -0.16 (-4) -4.4% |
| Revolutions per mile (km) | 744.58 (462.66) | 753.34 (468.1) | 8.76 (5.44) 1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.77 mph (31.81 km/h) |
| 25 mph (40.23 km/h) | 24.71 mph (39.77 km/h) |
| 30 mph (48.28 km/h) | 29.65 mph (47.72 km/h) |
| 35 mph (56.33 km/h) | 34.59 mph (55.67 km/h) |
| 40 mph (64.37 km/h) | 39.53 mph (63.63 km/h) |
| 45 mph (72.42 km/h) | 44.48 mph (71.58 km/h) |
| 50 mph (80.47 km/h) | 49.42 mph (79.53 km/h) |
| 55 mph (88.51 km/h) | 54.36 mph (87.48 km/h) |
| 60 mph (96.56 km/h) | 59.3 mph (95.44 km/h) |
| 65 mph (104.61 km/h) | 64.24 mph (103.39 km/h) |
| 70 mph (112.65 km/h) | 69.19 mph (111.34 km/h) |
| 75 mph (120.7 km/h) | 74.13 mph (119.3 km/h) |
| 80 mph (128.75 km/h) | 79.07 mph (127.25 km/h) |
| 85 mph (136.79 km/h) | 84.01 mph (135.2 km/h) |
| 90 mph (144.84 km/h) | 88.95 mph (143.16 km/h) |
| 95 mph (152.89 km/h) | 93.9 mph (151.11 km/h) |
| 100 mph (160.93 km/h) | 98.84 mph (159.06 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1917 | 2227 | 2398 | 2504 | 2619 | 2700 | 2790 | 2896 | 3043 | 3190 | 3353 | 3483 | 3720 | 3981 | 4185 | 4316 | 4389 | 4658 | 5033 | 5849 |
Better Fuel Economy Factory Ratios Increased Power
