Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/30-20 | 205/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 25.65 (651.5) | 0.57 (14.5) 2.3% |
| Width inches (mm) | 8.46 (215) | 8.07 (205) | -0.39 (-10) -4.7% |
| Circum. inches (mm) | 78.79 (2001.19) | 80.58 (2046.75) | 1.79 (45.55) 2.3% |
| Sidewall Height inches (mm) | 2.54 (64.5) | 2.82 (71.75) | 0.29 (7.25) 11.2% |
| Revolutions per mile (km) | 804.19 (499.7) | 786.29 (488.58) | -17.9 (-11.12) -2.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.46 mph (32.92 km/h) |
| 25 mph (40.23 km/h) | 25.57 mph (41.15 km/h) |
| 30 mph (48.28 km/h) | 30.68 mph (49.38 km/h) |
| 35 mph (56.33 km/h) | 35.8 mph (57.61 km/h) |
| 40 mph (64.37 km/h) | 40.91 mph (65.84 km/h) |
| 45 mph (72.42 km/h) | 46.02 mph (74.07 km/h) |
| 50 mph (80.47 km/h) | 51.14 mph (82.3 km/h) |
| 55 mph (88.51 km/h) | 56.25 mph (90.53 km/h) |
| 60 mph (96.56 km/h) | 61.37 mph (98.76 km/h) |
| 65 mph (104.61 km/h) | 66.48 mph (106.99 km/h) |
| 70 mph (112.65 km/h) | 71.59 mph (115.22 km/h) |
| 75 mph (120.7 km/h) | 76.71 mph (123.45 km/h) |
| 80 mph (128.75 km/h) | 81.82 mph (131.68 km/h) |
| 85 mph (136.79 km/h) | 86.93 mph (139.91 km/h) |
| 90 mph (144.84 km/h) | 92.05 mph (148.14 km/h) |
| 95 mph (152.89 km/h) | 97.16 mph (156.37 km/h) |
| 100 mph (160.93 km/h) | 102.28 mph (164.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2001 | 2325 | 2503 | 2614 | 2733 | 2818 | 2912 | 3023 | 3176 | 3329 | 3500 | 3636 | 3883 | 4155 | 4368 | 4504 | 4581 | 4862 | 5254 | 6105 |
Better Fuel Economy Factory Ratios Increased Power
