Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 265/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 26.26 (667) | -1.73 (-43.9) -6.2% |
| Width inches (mm) | 13.98 (355) | 10.43 (265) | -3.54 (-90) -25.4% |
| Circum. inches (mm) | 87.93 (2233.36) | 82.5 (2095.44) | -5.43 (-137.92) -6.2% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 3.13 (79.5) | -0.36 (-9.25) -10.4% |
| Revolutions per mile (km) | 720.59 (447.76) | 768.02 (477.23) | 47.43 (29.47) 6.6% |
265/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.76 mph (30.2 km/h) |
| 25 mph (40.23 km/h) | 23.46 mph (37.75 km/h) |
| 30 mph (48.28 km/h) | 28.15 mph (45.3 km/h) |
| 35 mph (56.33 km/h) | 32.84 mph (52.85 km/h) |
| 40 mph (64.37 km/h) | 37.53 mph (60.4 km/h) |
| 45 mph (72.42 km/h) | 42.22 mph (67.95 km/h) |
| 50 mph (80.47 km/h) | 46.91 mph (75.5 km/h) |
| 55 mph (88.51 km/h) | 51.6 mph (83.05 km/h) |
| 60 mph (96.56 km/h) | 56.29 mph (90.6 km/h) |
| 65 mph (104.61 km/h) | 60.99 mph (98.15 km/h) |
| 70 mph (112.65 km/h) | 65.68 mph (105.7 km/h) |
| 75 mph (120.7 km/h) | 70.37 mph (113.25 km/h) |
| 80 mph (128.75 km/h) | 75.06 mph (120.8 km/h) |
| 85 mph (136.79 km/h) | 79.75 mph (128.35 km/h) |
| 90 mph (144.84 km/h) | 84.44 mph (135.9 km/h) |
| 95 mph (152.89 km/h) | 89.13 mph (143.45 km/h) |
| 100 mph (160.93 km/h) | 93.82 mph (151 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
