Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/30-20 | 225/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.02 (661) | 26.2 (665.5) | 0.18 (4.5) 0.7% |
| Width inches (mm) | 10.04 (255) | 8.86 (225) | -1.18 (-30) -11.8% |
| Circum. inches (mm) | 81.76 (2076.59) | 82.31 (2090.73) | 0.56 (14.14) 0.7% |
| Sidewall Height inches (mm) | 3.01 (76.5) | 3.1 (78.75) | 0.09 (2.25) 2.9% |
| Revolutions per mile (km) | 774.99 (481.56) | 769.75 (478.3) | -5.24 (-3.26) -0.7% |
225/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.14 mph (32.41 km/h) |
| 25 mph (40.23 km/h) | 25.17 mph (40.51 km/h) |
| 30 mph (48.28 km/h) | 30.2 mph (48.61 km/h) |
| 35 mph (56.33 km/h) | 35.24 mph (56.71 km/h) |
| 40 mph (64.37 km/h) | 40.27 mph (64.81 km/h) |
| 45 mph (72.42 km/h) | 45.31 mph (72.91 km/h) |
| 50 mph (80.47 km/h) | 50.34 mph (81.02 km/h) |
| 55 mph (88.51 km/h) | 55.37 mph (89.12 km/h) |
| 60 mph (96.56 km/h) | 60.41 mph (97.22 km/h) |
| 65 mph (104.61 km/h) | 65.44 mph (105.32 km/h) |
| 70 mph (112.65 km/h) | 70.48 mph (113.42 km/h) |
| 75 mph (120.7 km/h) | 75.51 mph (121.52 km/h) |
| 80 mph (128.75 km/h) | 80.54 mph (129.62 km/h) |
| 85 mph (136.79 km/h) | 85.58 mph (137.73 km/h) |
| 90 mph (144.84 km/h) | 90.61 mph (145.83 km/h) |
| 95 mph (152.89 km/h) | 95.65 mph (153.93 km/h) |
| 100 mph (160.93 km/h) | 100.68 mph (162.03 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
