Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/55-20 | 265/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.04 (788.5) | 31.48 (799.5) | 0.43 (11) 1.4% |
| Width inches (mm) | 10.04 (255) | 10.43 (265) | 0.39 (10) 3.9% |
| Circum. inches (mm) | 97.53 (2477.15) | 98.89 (2511.7) | 1.36 (34.56) 1.4% |
| Sidewall Height inches (mm) | 5.52 (140.25) | 5.74 (145.75) | 0.22 (5.5) 3.9% |
| Revolutions per mile (km) | 649.68 (403.69) | 640.74 (398.14) | -8.94 (-5.55) -1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.28 mph (32.64 km/h) |
| 25 mph (40.23 km/h) | 25.35 mph (40.79 km/h) |
| 30 mph (48.28 km/h) | 30.42 mph (48.95 km/h) |
| 35 mph (56.33 km/h) | 35.49 mph (57.11 km/h) |
| 40 mph (64.37 km/h) | 40.56 mph (65.27 km/h) |
| 45 mph (72.42 km/h) | 45.63 mph (73.43 km/h) |
| 50 mph (80.47 km/h) | 50.7 mph (81.59 km/h) |
| 55 mph (88.51 km/h) | 55.77 mph (89.75 km/h) |
| 60 mph (96.56 km/h) | 60.84 mph (97.91 km/h) |
| 65 mph (104.61 km/h) | 65.91 mph (106.07 km/h) |
| 70 mph (112.65 km/h) | 70.98 mph (114.23 km/h) |
| 75 mph (120.7 km/h) | 76.05 mph (122.38 km/h) |
| 80 mph (128.75 km/h) | 81.12 mph (130.54 km/h) |
| 85 mph (136.79 km/h) | 86.19 mph (138.7 km/h) |
| 90 mph (144.84 km/h) | 91.26 mph (146.86 km/h) |
| 95 mph (152.89 km/h) | 96.33 mph (155.02 km/h) |
| 100 mph (160.93 km/h) | 101.4 mph (163.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1631 | 1894 | 2040 | 2130 | 2227 | 2297 | 2373 | 2463 | 2588 | 2713 | 2852 | 2963 | 3164 | 3386 | 3559 | 3670 | 3733 | 3962 | 4281 | 4975 |
Better Fuel Economy Factory Ratios Increased Power
