Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/25-20 | 265/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26 (660.5) | 26.26 (667) | 0.26 (6.5) 1% |
| Width inches (mm) | 12.01 (305) | 10.43 (265) | -1.57 (-40) -13.1% |
| Circum. inches (mm) | 81.69 (2075.02) | 82.5 (2095.44) | 0.8 (20.42) 1% |
| Sidewall Height inches (mm) | 3 (76.25) | 3.13 (79.5) | 0.13 (3.25) 4.3% |
| Revolutions per mile (km) | 775.58 (481.92) | 768.02 (477.23) | -7.56 (-4.7) -1% |
265/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.2 mph (32.5 km/h) |
| 25 mph (40.23 km/h) | 25.25 mph (40.63 km/h) |
| 30 mph (48.28 km/h) | 30.3 mph (48.76 km/h) |
| 35 mph (56.33 km/h) | 35.34 mph (56.88 km/h) |
| 40 mph (64.37 km/h) | 40.39 mph (65.01 km/h) |
| 45 mph (72.42 km/h) | 45.44 mph (73.13 km/h) |
| 50 mph (80.47 km/h) | 50.49 mph (81.26 km/h) |
| 55 mph (88.51 km/h) | 55.54 mph (89.39 km/h) |
| 60 mph (96.56 km/h) | 60.59 mph (97.51 km/h) |
| 65 mph (104.61 km/h) | 65.64 mph (105.64 km/h) |
| 70 mph (112.65 km/h) | 70.69 mph (113.76 km/h) |
| 75 mph (120.7 km/h) | 75.74 mph (121.89 km/h) |
| 80 mph (128.75 km/h) | 80.79 mph (130.01 km/h) |
| 85 mph (136.79 km/h) | 85.84 mph (138.14 km/h) |
| 90 mph (144.84 km/h) | 90.89 mph (146.27 km/h) |
| 95 mph (152.89 km/h) | 95.93 mph (154.39 km/h) |
| 100 mph (160.93 km/h) | 100.98 mph (162.52 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
