Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/45-20 | 235/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.04 (737.5) | 29.25 (743) | 0.22 (5.5) 0.7% |
| Width inches (mm) | 10.04 (255) | 9.25 (235) | -0.79 (-20) -7.8% |
| Circum. inches (mm) | 91.22 (2316.92) | 91.9 (2334.2) | 0.68 (17.28) 0.7% |
| Sidewall Height inches (mm) | 4.52 (114.75) | 4.63 (117.5) | 0.11 (2.75) 2.4% |
| Revolutions per mile (km) | 694.6 (431.61) | 689.46 (428.41) | -5.14 (-3.19) -0.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.15 mph (32.43 km/h) |
| 25 mph (40.23 km/h) | 25.19 mph (40.53 km/h) |
| 30 mph (48.28 km/h) | 30.22 mph (48.64 km/h) |
| 35 mph (56.33 km/h) | 35.26 mph (56.75 km/h) |
| 40 mph (64.37 km/h) | 40.3 mph (64.85 km/h) |
| 45 mph (72.42 km/h) | 45.34 mph (72.96 km/h) |
| 50 mph (80.47 km/h) | 50.37 mph (81.07 km/h) |
| 55 mph (88.51 km/h) | 55.41 mph (89.17 km/h) |
| 60 mph (96.56 km/h) | 60.45 mph (97.28 km/h) |
| 65 mph (104.61 km/h) | 65.48 mph (105.39 km/h) |
| 70 mph (112.65 km/h) | 70.52 mph (113.49 km/h) |
| 75 mph (120.7 km/h) | 75.56 mph (121.6 km/h) |
| 80 mph (128.75 km/h) | 80.6 mph (129.71 km/h) |
| 85 mph (136.79 km/h) | 85.63 mph (137.81 km/h) |
| 90 mph (144.84 km/h) | 90.67 mph (145.92 km/h) |
| 95 mph (152.89 km/h) | 95.71 mph (154.03 km/h) |
| 100 mph (160.93 km/h) | 100.75 mph (162.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1755 | 2038 | 2195 | 2292 | 2397 | 2471 | 2553 | 2650 | 2785 | 2919 | 3069 | 3188 | 3405 | 3643 | 3830 | 3950 | 4017 | 4263 | 4607 | 5353 |
Better Fuel Economy Factory Ratios Increased Power
