Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/30-20 | 250/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.02 (661) | 26.89 (683) | 0.87 (22) 3.3% |
| Width inches (mm) | 10.04 (255) | 9.84 (250) | -0.2 (-5) -2% |
| Circum. inches (mm) | 81.76 (2076.59) | 84.48 (2145.71) | 2.72 (69.12) 3.3% |
| Sidewall Height inches (mm) | 3.01 (76.5) | 3.44 (87.5) | 0.43 (11) 14.4% |
| Revolutions per mile (km) | 774.99 (481.56) | 750.03 (466.05) | -24.96 (-15.51) -3.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.67 mph (33.26 km/h) |
| 25 mph (40.23 km/h) | 25.83 mph (41.57 km/h) |
| 30 mph (48.28 km/h) | 31 mph (49.89 km/h) |
| 35 mph (56.33 km/h) | 36.16 mph (58.2 km/h) |
| 40 mph (64.37 km/h) | 41.33 mph (66.52 km/h) |
| 45 mph (72.42 km/h) | 46.5 mph (74.83 km/h) |
| 50 mph (80.47 km/h) | 51.66 mph (83.15 km/h) |
| 55 mph (88.51 km/h) | 56.83 mph (91.46 km/h) |
| 60 mph (96.56 km/h) | 62 mph (99.77 km/h) |
| 65 mph (104.61 km/h) | 67.16 mph (108.09 km/h) |
| 70 mph (112.65 km/h) | 72.33 mph (116.4 km/h) |
| 75 mph (120.7 km/h) | 77.5 mph (124.72 km/h) |
| 80 mph (128.75 km/h) | 82.66 mph (133.03 km/h) |
| 85 mph (136.79 km/h) | 87.83 mph (141.35 km/h) |
| 90 mph (144.84 km/h) | 93 mph (149.66 km/h) |
| 95 mph (152.89 km/h) | 98.16 mph (157.98 km/h) |
| 100 mph (160.93 km/h) | 103.33 mph (166.29 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1909 | 2217 | 2388 | 2493 | 2607 | 2688 | 2778 | 2883 | 3030 | 3176 | 3338 | 3468 | 3704 | 3964 | 4167 | 4297 | 4370 | 4638 | 5011 | 5824 |
Better Fuel Economy Factory Ratios Increased Power
