Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/30-23 | 305/20-25 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.2 (767.2) | 29.8 (757) | -0.4 (-10.2) -1.3% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 94.89 (2410.23) | 93.63 (2378.19) | -1.26 (-32.04) -1.3% |
| Sidewall Height inches (mm) | 3.6 (91.5) | 2.4 (61) | -1.2 (-30.5) -33.3% |
| Revolutions per mile (km) | 667.71 (414.9) | 676.71 (420.49) | 9 (5.59) 1.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.73 mph (31.76 km/h) |
| 25 mph (40.23 km/h) | 24.67 mph (39.7 km/h) |
| 30 mph (48.28 km/h) | 29.6 mph (47.64 km/h) |
| 35 mph (56.33 km/h) | 34.53 mph (55.58 km/h) |
| 40 mph (64.37 km/h) | 39.47 mph (63.52 km/h) |
| 45 mph (72.42 km/h) | 44.4 mph (71.46 km/h) |
| 50 mph (80.47 km/h) | 49.34 mph (79.4 km/h) |
| 55 mph (88.51 km/h) | 54.27 mph (87.34 km/h) |
| 60 mph (96.56 km/h) | 59.2 mph (95.28 km/h) |
| 65 mph (104.61 km/h) | 64.14 mph (103.22 km/h) |
| 70 mph (112.65 km/h) | 69.07 mph (111.16 km/h) |
| 75 mph (120.7 km/h) | 74 mph (119.1 km/h) |
| 80 mph (128.75 km/h) | 78.94 mph (127.04 km/h) |
| 85 mph (136.79 km/h) | 83.87 mph (134.98 km/h) |
| 90 mph (144.84 km/h) | 88.8 mph (142.92 km/h) |
| 95 mph (152.89 km/h) | 93.74 mph (150.86 km/h) |
| 100 mph (160.93 km/h) | 98.67 mph (158.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1722 | 2001 | 2154 | 2250 | 2352 | 2426 | 2506 | 2601 | 2733 | 2865 | 3012 | 3129 | 3342 | 3576 | 3759 | 3877 | 3943 | 4184 | 4521 | 5254 |
Better Fuel Economy Factory Ratios Increased Power
