Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/45-20 | 225/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.33 (719.5) | 28.86 (733) | 0.53 (13.5) 1.9% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 88.99 (2260.38) | 90.66 (2302.79) | 1.67 (42.41) 1.9% |
| Sidewall Height inches (mm) | 4.16 (105.75) | 4.43 (112.5) | 0.27 (6.75) 6.4% |
| Revolutions per mile (km) | 711.98 (442.4) | 698.87 (434.26) | -13.11 (-8.15) -1.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.38 mph (32.79 km/h) |
| 25 mph (40.23 km/h) | 25.47 mph (40.99 km/h) |
| 30 mph (48.28 km/h) | 30.56 mph (49.19 km/h) |
| 35 mph (56.33 km/h) | 35.66 mph (57.38 km/h) |
| 40 mph (64.37 km/h) | 40.75 mph (65.58 km/h) |
| 45 mph (72.42 km/h) | 45.84 mph (73.78 km/h) |
| 50 mph (80.47 km/h) | 50.94 mph (81.98 km/h) |
| 55 mph (88.51 km/h) | 56.03 mph (90.17 km/h) |
| 60 mph (96.56 km/h) | 61.13 mph (98.37 km/h) |
| 65 mph (104.61 km/h) | 66.22 mph (106.57 km/h) |
| 70 mph (112.65 km/h) | 71.31 mph (114.77 km/h) |
| 75 mph (120.7 km/h) | 76.41 mph (122.97 km/h) |
| 80 mph (128.75 km/h) | 81.5 mph (131.16 km/h) |
| 85 mph (136.79 km/h) | 86.59 mph (139.36 km/h) |
| 90 mph (144.84 km/h) | 91.69 mph (147.56 km/h) |
| 95 mph (152.89 km/h) | 96.78 mph (155.76 km/h) |
| 100 mph (160.93 km/h) | 101.88 mph (163.95 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1778 | 2066 | 2225 | 2323 | 2429 | 2505 | 2588 | 2687 | 2823 | 2959 | 3110 | 3232 | 3451 | 3693 | 3882 | 4003 | 4072 | 4321 | 4669 | 5426 |
Better Fuel Economy Factory Ratios Increased Power
