Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/35-20 | 235/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.2 (665.5) | 25.55 (649) | -0.65 (-16.5) -2.5% |
| Width inches (mm) | 8.86 (225) | 9.25 (235) | 0.39 (10) 4.4% |
| Circum. inches (mm) | 82.31 (2090.73) | 80.27 (2038.89) | -2.04 (-51.84) -2.5% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 2.78 (70.5) | -0.32 (-8.25) -10.5% |
| Revolutions per mile (km) | 769.75 (478.3) | 789.32 (490.46) | 19.57 (12.16) 2.5% |
235/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.5 mph (31.39 km/h) |
| 25 mph (40.23 km/h) | 24.38 mph (39.24 km/h) |
| 30 mph (48.28 km/h) | 29.26 mph (47.08 km/h) |
| 35 mph (56.33 km/h) | 34.13 mph (54.93 km/h) |
| 40 mph (64.37 km/h) | 39.01 mph (62.78 km/h) |
| 45 mph (72.42 km/h) | 43.88 mph (70.63 km/h) |
| 50 mph (80.47 km/h) | 48.76 mph (78.47 km/h) |
| 55 mph (88.51 km/h) | 53.64 mph (86.32 km/h) |
| 60 mph (96.56 km/h) | 58.51 mph (94.17 km/h) |
| 65 mph (104.61 km/h) | 63.39 mph (102.01 km/h) |
| 70 mph (112.65 km/h) | 68.26 mph (109.86 km/h) |
| 75 mph (120.7 km/h) | 73.14 mph (117.71 km/h) |
| 80 mph (128.75 km/h) | 78.02 mph (125.56 km/h) |
| 85 mph (136.79 km/h) | 82.89 mph (133.4 km/h) |
| 90 mph (144.84 km/h) | 87.77 mph (141.25 km/h) |
| 95 mph (152.89 km/h) | 92.64 mph (149.1 km/h) |
| 100 mph (160.93 km/h) | 97.52 mph (156.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2009 | 2333 | 2513 | 2624 | 2744 | 2829 | 2923 | 3034 | 3188 | 3342 | 3513 | 3650 | 3898 | 4171 | 4385 | 4522 | 4599 | 4881 | 5274 | 6129 |
Better Fuel Economy Factory Ratios Increased Power
