Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-20 | 215/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.09 (688) | 27.62 (701.5) | 0.53 (13.5) 2% |
| Width inches (mm) | 8.86 (225) | 8.46 (215) | -0.39 (-10) -4.4% |
| Circum. inches (mm) | 85.1 (2161.42) | 86.76 (2203.83) | 1.67 (42.41) 2% |
| Sidewall Height inches (mm) | 3.54 (90) | 3.81 (96.75) | 0.27 (6.75) 7.5% |
| Revolutions per mile (km) | 744.58 (462.66) | 730.25 (453.76) | -14.33 (-8.9) -1.9% |
215/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.39 mph (32.82 km/h) |
| 25 mph (40.23 km/h) | 25.49 mph (41.02 km/h) |
| 30 mph (48.28 km/h) | 30.59 mph (49.23 km/h) |
| 35 mph (56.33 km/h) | 35.69 mph (57.43 km/h) |
| 40 mph (64.37 km/h) | 40.78 mph (65.64 km/h) |
| 45 mph (72.42 km/h) | 45.88 mph (73.84 km/h) |
| 50 mph (80.47 km/h) | 50.98 mph (82.05 km/h) |
| 55 mph (88.51 km/h) | 56.08 mph (90.25 km/h) |
| 60 mph (96.56 km/h) | 61.18 mph (98.46 km/h) |
| 65 mph (104.61 km/h) | 66.28 mph (106.66 km/h) |
| 70 mph (112.65 km/h) | 71.37 mph (114.86 km/h) |
| 75 mph (120.7 km/h) | 76.47 mph (123.07 km/h) |
| 80 mph (128.75 km/h) | 81.57 mph (131.27 km/h) |
| 85 mph (136.79 km/h) | 86.67 mph (139.48 km/h) |
| 90 mph (144.84 km/h) | 91.77 mph (147.68 km/h) |
| 95 mph (152.89 km/h) | 96.86 mph (155.89 km/h) |
| 100 mph (160.93 km/h) | 101.96 mph (164.09 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1858 | 2159 | 2325 | 2428 | 2538 | 2617 | 2704 | 2807 | 2950 | 3092 | 3250 | 3377 | 3606 | 3859 | 4057 | 4183 | 4254 | 4515 | 4879 | 5670 |
Better Fuel Economy Factory Ratios Increased Power
