Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/35-20 | 235/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.2 (665.5) | 28.33 (719.5) | 2.13 (54) 8.1% |
| Width inches (mm) | 8.86 (225) | 9.25 (235) | 0.39 (10) 4.4% |
| Circum. inches (mm) | 82.31 (2090.73) | 88.99 (2260.38) | 6.68 (169.65) 8.1% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 4.16 (105.75) | 1.06 (27) 34.3% |
| Revolutions per mile (km) | 769.75 (478.3) | 711.98 (442.4) | -57.77 (-35.9) -7.5% |
235/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.62 mph (34.8 km/h) |
| 25 mph (40.23 km/h) | 27.03 mph (43.5 km/h) |
| 30 mph (48.28 km/h) | 32.43 mph (52.2 km/h) |
| 35 mph (56.33 km/h) | 37.84 mph (60.9 km/h) |
| 40 mph (64.37 km/h) | 43.25 mph (69.6 km/h) |
| 45 mph (72.42 km/h) | 48.65 mph (78.3 km/h) |
| 50 mph (80.47 km/h) | 54.06 mph (87 km/h) |
| 55 mph (88.51 km/h) | 59.46 mph (95.7 km/h) |
| 60 mph (96.56 km/h) | 64.87 mph (104.4 km/h) |
| 65 mph (104.61 km/h) | 70.27 mph (113.1 km/h) |
| 70 mph (112.65 km/h) | 75.68 mph (121.8 km/h) |
| 75 mph (120.7 km/h) | 81.09 mph (130.49 km/h) |
| 80 mph (128.75 km/h) | 86.49 mph (139.19 km/h) |
| 85 mph (136.79 km/h) | 91.9 mph (147.89 km/h) |
| 90 mph (144.84 km/h) | 97.3 mph (156.59 km/h) |
| 95 mph (152.89 km/h) | 102.71 mph (165.29 km/h) |
| 100 mph (160.93 km/h) | 108.11 mph (173.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1812 | 2105 | 2267 | 2367 | 2475 | 2552 | 2637 | 2737 | 2876 | 3015 | 3169 | 3292 | 3516 | 3762 | 3955 | 4079 | 4148 | 4402 | 4757 | 5528 |
Better Fuel Economy Factory Ratios Increased Power
