Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/50-20 | 235/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.04 (763) | 30.18 (766.5) | 0.14 (3.5) 0.5% |
| Width inches (mm) | 10.04 (255) | 9.25 (235) | -0.79 (-20) -7.8% |
| Circum. inches (mm) | 94.37 (2397.04) | 94.8 (2408.03) | 0.43 (11) 0.5% |
| Sidewall Height inches (mm) | 5.02 (127.5) | 5.09 (129.25) | 0.07 (1.75) 1.4% |
| Revolutions per mile (km) | 671.39 (417.18) | 668.32 (415.28) | -3.07 (-1.9) -0.5% |
235/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.09 mph (32.33 km/h) |
| 25 mph (40.23 km/h) | 25.11 mph (40.42 km/h) |
| 30 mph (48.28 km/h) | 30.14 mph (48.5 km/h) |
| 35 mph (56.33 km/h) | 35.16 mph (56.59 km/h) |
| 40 mph (64.37 km/h) | 40.18 mph (64.67 km/h) |
| 45 mph (72.42 km/h) | 45.21 mph (72.75 km/h) |
| 50 mph (80.47 km/h) | 50.23 mph (80.84 km/h) |
| 55 mph (88.51 km/h) | 55.25 mph (88.92 km/h) |
| 60 mph (96.56 km/h) | 60.28 mph (97 km/h) |
| 65 mph (104.61 km/h) | 65.3 mph (105.09 km/h) |
| 70 mph (112.65 km/h) | 70.32 mph (113.17 km/h) |
| 75 mph (120.7 km/h) | 75.34 mph (121.25 km/h) |
| 80 mph (128.75 km/h) | 80.37 mph (129.34 km/h) |
| 85 mph (136.79 km/h) | 85.39 mph (137.42 km/h) |
| 90 mph (144.84 km/h) | 90.41 mph (145.51 km/h) |
| 95 mph (152.89 km/h) | 95.44 mph (153.59 km/h) |
| 100 mph (160.93 km/h) | 100.46 mph (161.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1701 | 1976 | 2128 | 2222 | 2323 | 2396 | 2475 | 2569 | 2699 | 2830 | 2975 | 3090 | 3300 | 3532 | 3713 | 3829 | 3894 | 4132 | 4465 | 5189 |
Better Fuel Economy Factory Ratios Increased Power
