Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/35-20 | 265/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.48 (672.5) | 26.26 (667) | -0.22 (-5.5) -0.8% |
| Width inches (mm) | 9.25 (235) | 10.43 (265) | 1.18 (30) 12.8% |
| Circum. inches (mm) | 83.18 (2112.72) | 82.5 (2095.44) | -0.68 (-17.28) -0.8% |
| Sidewall Height inches (mm) | 3.24 (82.25) | 3.13 (79.5) | -0.11 (-2.75) -3.3% |
| Revolutions per mile (km) | 761.74 (473.32) | 768.02 (477.23) | 6.28 (3.9) 0.8% |
265/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.84 mph (31.92 km/h) |
| 25 mph (40.23 km/h) | 24.8 mph (39.9 km/h) |
| 30 mph (48.28 km/h) | 29.75 mph (47.89 km/h) |
| 35 mph (56.33 km/h) | 34.71 mph (55.87 km/h) |
| 40 mph (64.37 km/h) | 39.67 mph (63.85 km/h) |
| 45 mph (72.42 km/h) | 44.63 mph (71.83 km/h) |
| 50 mph (80.47 km/h) | 49.59 mph (79.81 km/h) |
| 55 mph (88.51 km/h) | 54.55 mph (87.79 km/h) |
| 60 mph (96.56 km/h) | 59.51 mph (95.77 km/h) |
| 65 mph (104.61 km/h) | 64.47 mph (103.75 km/h) |
| 70 mph (112.65 km/h) | 69.43 mph (111.73 km/h) |
| 75 mph (120.7 km/h) | 74.39 mph (119.71 km/h) |
| 80 mph (128.75 km/h) | 79.35 mph (127.69 km/h) |
| 85 mph (136.79 km/h) | 84.3 mph (135.68 km/h) |
| 90 mph (144.84 km/h) | 89.26 mph (143.66 km/h) |
| 95 mph (152.89 km/h) | 94.22 mph (151.64 km/h) |
| 100 mph (160.93 km/h) | 99.18 mph (159.62 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
