Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/30-20 | 225/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 25.31 (643) | 0.24 (6) 0.9% |
| Width inches (mm) | 8.46 (215) | 8.86 (225) | 0.39 (10) 4.7% |
| Circum. inches (mm) | 78.79 (2001.19) | 79.53 (2020.04) | 0.74 (18.85) 0.9% |
| Sidewall Height inches (mm) | 2.54 (64.5) | 2.66 (67.5) | 0.12 (3) 4.7% |
| Revolutions per mile (km) | 804.19 (499.7) | 796.69 (495.04) | -7.5 (-4.66) -0.9% |
225/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.19 mph (32.49 km/h) |
| 25 mph (40.23 km/h) | 25.24 mph (40.61 km/h) |
| 30 mph (48.28 km/h) | 30.28 mph (48.74 km/h) |
| 35 mph (56.33 km/h) | 35.33 mph (56.86 km/h) |
| 40 mph (64.37 km/h) | 40.38 mph (64.98 km/h) |
| 45 mph (72.42 km/h) | 45.42 mph (73.1 km/h) |
| 50 mph (80.47 km/h) | 50.47 mph (81.23 km/h) |
| 55 mph (88.51 km/h) | 55.52 mph (89.35 km/h) |
| 60 mph (96.56 km/h) | 60.57 mph (97.47 km/h) |
| 65 mph (104.61 km/h) | 65.61 mph (105.59 km/h) |
| 70 mph (112.65 km/h) | 70.66 mph (113.72 km/h) |
| 75 mph (120.7 km/h) | 75.71 mph (121.84 km/h) |
| 80 mph (128.75 km/h) | 80.75 mph (129.96 km/h) |
| 85 mph (136.79 km/h) | 85.8 mph (138.08 km/h) |
| 90 mph (144.84 km/h) | 90.85 mph (146.21 km/h) |
| 95 mph (152.89 km/h) | 95.89 mph (154.33 km/h) |
| 100 mph (160.93 km/h) | 100.94 mph (162.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2027 | 2355 | 2536 | 2649 | 2769 | 2856 | 2951 | 3063 | 3218 | 3373 | 3546 | 3684 | 3934 | 4210 | 4426 | 4564 | 4641 | 4926 | 5323 | 6186 |
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