Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/30-20 | 265/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.31 (643) | 26.26 (667) | 0.94 (24) 3.7% |
| Width inches (mm) | 8.86 (225) | 10.43 (265) | 1.57 (40) 17.8% |
| Circum. inches (mm) | 79.53 (2020.04) | 82.5 (2095.44) | 2.97 (75.4) 3.7% |
| Sidewall Height inches (mm) | 2.66 (67.5) | 3.13 (79.5) | 0.47 (12) 17.8% |
| Revolutions per mile (km) | 796.69 (495.04) | 768.02 (477.23) | -28.67 (-17.81) -3.6% |
265/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.75 mph (33.39 km/h) |
| 25 mph (40.23 km/h) | 25.93 mph (41.74 km/h) |
| 30 mph (48.28 km/h) | 31.12 mph (50.08 km/h) |
| 35 mph (56.33 km/h) | 36.31 mph (58.43 km/h) |
| 40 mph (64.37 km/h) | 41.49 mph (66.78 km/h) |
| 45 mph (72.42 km/h) | 46.68 mph (75.12 km/h) |
| 50 mph (80.47 km/h) | 51.87 mph (83.47 km/h) |
| 55 mph (88.51 km/h) | 57.05 mph (91.82 km/h) |
| 60 mph (96.56 km/h) | 62.24 mph (100.16 km/h) |
| 65 mph (104.61 km/h) | 67.43 mph (108.51 km/h) |
| 70 mph (112.65 km/h) | 72.61 mph (116.86 km/h) |
| 75 mph (120.7 km/h) | 77.8 mph (125.21 km/h) |
| 80 mph (128.75 km/h) | 82.99 mph (133.55 km/h) |
| 85 mph (136.79 km/h) | 88.17 mph (141.9 km/h) |
| 90 mph (144.84 km/h) | 93.36 mph (150.25 km/h) |
| 95 mph (152.89 km/h) | 98.55 mph (158.59 km/h) |
| 100 mph (160.93 km/h) | 103.73 mph (166.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1954 | 2271 | 2445 | 2553 | 2670 | 2753 | 2844 | 2952 | 3102 | 3252 | 3418 | 3551 | 3792 | 4059 | 4267 | 4400 | 4474 | 4749 | 5132 | 5963 |
Better Fuel Economy Factory Ratios Increased Power
