Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/30-23 | 305/20-23 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.2 (767.2) | 27.8 (706.2) | -2.4 (-61) -8% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 94.89 (2410.23) | 87.35 (2218.59) | -7.54 (-191.64) -8% |
| 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) | 725.39 (450.74) | 57.68 (35.84) 8.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.41 mph (29.63 km/h) |
| 25 mph (40.23 km/h) | 23.01 mph (37.03 km/h) |
| 30 mph (48.28 km/h) | 27.61 mph (44.44 km/h) |
| 35 mph (56.33 km/h) | 32.22 mph (51.85 km/h) |
| 40 mph (64.37 km/h) | 36.82 mph (59.26 km/h) |
| 45 mph (72.42 km/h) | 41.42 mph (66.66 km/h) |
| 50 mph (80.47 km/h) | 46.02 mph (74.07 km/h) |
| 55 mph (88.51 km/h) | 50.63 mph (81.48 km/h) |
| 60 mph (96.56 km/h) | 55.23 mph (88.88 km/h) |
| 65 mph (104.61 km/h) | 59.83 mph (96.29 km/h) |
| 70 mph (112.65 km/h) | 64.43 mph (103.7 km/h) |
| 75 mph (120.7 km/h) | 69.04 mph (111.1 km/h) |
| 80 mph (128.75 km/h) | 73.64 mph (118.51 km/h) |
| 85 mph (136.79 km/h) | 78.24 mph (125.92 km/h) |
| 90 mph (144.84 km/h) | 82.84 mph (133.32 km/h) |
| 95 mph (152.89 km/h) | 87.45 mph (140.73 km/h) |
| 100 mph (160.93 km/h) | 92.05 mph (148.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1846 | 2144 | 2309 | 2412 | 2522 | 2600 | 2686 | 2789 | 2930 | 3071 | 3228 | 3354 | 3582 | 3833 | 4030 | 4155 | 4226 | 4485 | 4847 | 5632 |
Better Fuel Economy Factory Ratios Increased Power
