Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/30-20 | 225/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.55 (649) | 26.2 (665.5) | 0.65 (16.5) 2.5% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 80.27 (2038.89) | 82.31 (2090.73) | 2.04 (51.84) 2.5% |
| Sidewall Height inches (mm) | 2.78 (70.5) | 3.1 (78.75) | 0.32 (8.25) 11.7% |
| Revolutions per mile (km) | 789.32 (490.46) | 769.75 (478.3) | -19.57 (-12.16) -2.5% |
225/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.51 mph (33.01 km/h) |
| 25 mph (40.23 km/h) | 25.64 mph (41.26 km/h) |
| 30 mph (48.28 km/h) | 30.76 mph (49.51 km/h) |
| 35 mph (56.33 km/h) | 35.89 mph (57.76 km/h) |
| 40 mph (64.37 km/h) | 41.02 mph (66.01 km/h) |
| 45 mph (72.42 km/h) | 46.14 mph (74.26 km/h) |
| 50 mph (80.47 km/h) | 51.27 mph (82.51 km/h) |
| 55 mph (88.51 km/h) | 56.4 mph (90.76 km/h) |
| 60 mph (96.56 km/h) | 61.53 mph (99.02 km/h) |
| 65 mph (104.61 km/h) | 66.65 mph (107.27 km/h) |
| 70 mph (112.65 km/h) | 71.78 mph (115.52 km/h) |
| 75 mph (120.7 km/h) | 76.91 mph (123.77 km/h) |
| 80 mph (128.75 km/h) | 82.03 mph (132.02 km/h) |
| 85 mph (136.79 km/h) | 87.16 mph (140.27 km/h) |
| 90 mph (144.84 km/h) | 92.29 mph (148.52 km/h) |
| 95 mph (152.89 km/h) | 97.42 mph (156.77 km/h) |
| 100 mph (160.93 km/h) | 102.54 mph (165.03 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1959 | 2276 | 2451 | 2559 | 2676 | 2759 | 2851 | 2959 | 3109 | 3259 | 3426 | 3559 | 3801 | 4068 | 4276 | 4410 | 4485 | 4760 | 5143 | 5977 |
Better Fuel Economy Factory Ratios Increased Power
