Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/80-19 | 265/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.76 (730.6) | 29.39 (746.5) | 0.63 (15.9) 2.2% |
| Width inches (mm) | 6.1 (155) | 10.43 (265) | 4.33 (110) 71% |
| Circum. inches (mm) | 90.36 (2295.25) | 92.33 (2345.2) | 1.97 (49.95) 2.2% |
| Sidewall Height inches (mm) | 4.88 (124) | 4.69 (119.25) | -0.19 (-4.75) -3.8% |
| Revolutions per mile (km) | 701.16 (435.68) | 686.23 (426.4) | -14.93 (-9.28) -2.1% |
265/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.44 mph (32.89 km/h) |
| 25 mph (40.23 km/h) | 25.54 mph (41.11 km/h) |
| 30 mph (48.28 km/h) | 30.65 mph (49.33 km/h) |
| 35 mph (56.33 km/h) | 35.76 mph (57.55 km/h) |
| 40 mph (64.37 km/h) | 40.87 mph (65.77 km/h) |
| 45 mph (72.42 km/h) | 45.98 mph (74 km/h) |
| 50 mph (80.47 km/h) | 51.09 mph (82.22 km/h) |
| 55 mph (88.51 km/h) | 56.2 mph (90.44 km/h) |
| 60 mph (96.56 km/h) | 61.31 mph (98.66 km/h) |
| 65 mph (104.61 km/h) | 66.41 mph (106.88 km/h) |
| 70 mph (112.65 km/h) | 71.52 mph (115.11 km/h) |
| 75 mph (120.7 km/h) | 76.63 mph (123.33 km/h) |
| 80 mph (128.75 km/h) | 81.74 mph (131.55 km/h) |
| 85 mph (136.79 km/h) | 86.85 mph (139.77 km/h) |
| 90 mph (144.84 km/h) | 91.96 mph (147.99 km/h) |
| 95 mph (152.89 km/h) | 97.07 mph (156.22 km/h) |
| 100 mph (160.93 km/h) | 102.18 mph (164.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1746 | 2029 | 2185 | 2281 | 2385 | 2460 | 2541 | 2638 | 2772 | 2906 | 3054 | 3173 | 3389 | 3626 | 3812 | 3931 | 3998 | 4243 | 4585 | 5328 |
Better Fuel Economy Factory Ratios Increased Power
