Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/30-23 | 305/25-23 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.2 (767.2) | 29 (736.7) | -1.2 (-30.5) -4% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 94.89 (2410.23) | 91.12 (2314.41) | -3.77 (-95.82) -4% |
| Sidewall Height inches (mm) | 3.6 (91.5) | 3 (76.25) | -0.6 (-15.25) -16.7% |
| Revolutions per mile (km) | 667.71 (414.9) | 695.36 (432.07) | 27.64 (17.18) 4.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.2 mph (30.91 km/h) |
| 25 mph (40.23 km/h) | 24.01 mph (38.63 km/h) |
| 30 mph (48.28 km/h) | 28.81 mph (46.36 km/h) |
| 35 mph (56.33 km/h) | 33.61 mph (54.09 km/h) |
| 40 mph (64.37 km/h) | 38.41 mph (61.81 km/h) |
| 45 mph (72.42 km/h) | 43.21 mph (69.54 km/h) |
| 50 mph (80.47 km/h) | 48.01 mph (77.27 km/h) |
| 55 mph (88.51 km/h) | 52.81 mph (85 km/h) |
| 60 mph (96.56 km/h) | 57.61 mph (92.72 km/h) |
| 65 mph (104.61 km/h) | 62.42 mph (100.45 km/h) |
| 70 mph (112.65 km/h) | 67.22 mph (108.18 km/h) |
| 75 mph (120.7 km/h) | 72.02 mph (115.9 km/h) |
| 80 mph (128.75 km/h) | 76.82 mph (123.63 km/h) |
| 85 mph (136.79 km/h) | 81.62 mph (131.36 km/h) |
| 90 mph (144.84 km/h) | 86.42 mph (139.08 km/h) |
| 95 mph (152.89 km/h) | 91.22 mph (146.81 km/h) |
| 100 mph (160.93 km/h) | 96.02 mph (154.54 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1770 | 2056 | 2214 | 2312 | 2417 | 2492 | 2575 | 2673 | 2809 | 2944 | 3095 | 3215 | 3434 | 3675 | 3863 | 3983 | 4051 | 4300 | 4646 | 5399 |
Better Fuel Economy Factory Ratios Increased Power
