Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/30-23 | 305/80-23 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.2 (767.2) | 42.21 (1072.2) | 12.01 (305) 39.8% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 94.89 (2410.23) | 132.61 (3368.42) | 37.72 (958.19) 39.8% |
| Sidewall Height inches (mm) | 3.6 (91.5) | 9.61 (244) | 6 (152.5) 166.7% |
| Revolutions per mile (km) | 667.71 (414.9) | 477.77 (296.87) | -189.94 (-118.02) -28.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.95 mph (44.98 km/h) |
| 25 mph (40.23 km/h) | 34.94 mph (56.23 km/h) |
| 30 mph (48.28 km/h) | 41.93 mph (67.47 km/h) |
| 35 mph (56.33 km/h) | 48.91 mph (78.72 km/h) |
| 40 mph (64.37 km/h) | 55.9 mph (89.97 km/h) |
| 45 mph (72.42 km/h) | 62.89 mph (101.21 km/h) |
| 50 mph (80.47 km/h) | 69.88 mph (112.46 km/h) |
| 55 mph (88.51 km/h) | 76.87 mph (123.7 km/h) |
| 60 mph (96.56 km/h) | 83.85 mph (134.95 km/h) |
| 65 mph (104.61 km/h) | 90.84 mph (146.19 km/h) |
| 70 mph (112.65 km/h) | 97.83 mph (157.44 km/h) |
| 75 mph (120.7 km/h) | 104.82 mph (168.69 km/h) |
| 80 mph (128.75 km/h) | 111.8 mph (179.93 km/h) |
| 85 mph (136.79 km/h) | 118.79 mph (191.18 km/h) |
| 90 mph (144.84 km/h) | 125.78 mph (202.42 km/h) |
| 95 mph (152.89 km/h) | 132.77 mph (213.67 km/h) |
| 100 mph (160.93 km/h) | 139.75 mph (224.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1216 | 1412 | 1521 | 1588 | 1661 | 1713 | 1769 | 1837 | 1930 | 2023 | 2126 | 2209 | 2359 | 2525 | 2654 | 2737 | 2784 | 2954 | 3192 | 3710 |
Better Fuel Economy Factory Ratios Increased Power
