Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/30-20 | 305/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.97 (685) | 27.2 (691) | 0.24 (6) 0.9% |
| Width inches (mm) | 11.61 (295) | 12.01 (305) | 0.39 (10) 3.4% |
| Circum. inches (mm) | 84.72 (2151.99) | 85.47 (2170.84) | 0.74 (18.85) 0.9% |
| Sidewall Height inches (mm) | 3.48 (88.5) | 3.6 (91.5) | 0.12 (3) 3.4% |
| Revolutions per mile (km) | 747.84 (464.69) | 741.35 (460.65) | -6.49 (-4.03) -0.9% |
305/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.18 mph (32.47 km/h) |
| 25 mph (40.23 km/h) | 25.22 mph (40.59 km/h) |
| 30 mph (48.28 km/h) | 30.26 mph (48.7 km/h) |
| 35 mph (56.33 km/h) | 35.31 mph (56.82 km/h) |
| 40 mph (64.37 km/h) | 40.35 mph (64.94 km/h) |
| 45 mph (72.42 km/h) | 45.39 mph (73.05 km/h) |
| 50 mph (80.47 km/h) | 50.44 mph (81.17 km/h) |
| 55 mph (88.51 km/h) | 55.48 mph (89.29 km/h) |
| 60 mph (96.56 km/h) | 60.53 mph (97.41 km/h) |
| 65 mph (104.61 km/h) | 65.57 mph (105.52 km/h) |
| 70 mph (112.65 km/h) | 70.61 mph (113.64 km/h) |
| 75 mph (120.7 km/h) | 75.66 mph (121.76 km/h) |
| 80 mph (128.75 km/h) | 80.7 mph (129.88 km/h) |
| 85 mph (136.79 km/h) | 85.74 mph (137.99 km/h) |
| 90 mph (144.84 km/h) | 90.79 mph (146.11 km/h) |
| 95 mph (152.89 km/h) | 95.83 mph (154.23 km/h) |
| 100 mph (160.93 km/h) | 100.88 mph (162.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1887 | 2192 | 2360 | 2465 | 2577 | 2657 | 2746 | 2850 | 2994 | 3139 | 3300 | 3428 | 3661 | 3918 | 4118 | 4247 | 4319 | 4584 | 4953 | 5756 |
Better Fuel Economy Factory Ratios Increased Power
