Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/25-19 | 315/20-24 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25 (635.1) | 28.96 (735.6) | 3.96 (100.5) 15.8% |
| Width inches (mm) | 12.01 (305) | 12.4 (315) | 0.39 (10) 3.3% |
| Circum. inches (mm) | 78.55 (1995.23) | 90.98 (2310.96) | 12.43 (315.73) 15.8% |
| Sidewall Height inches (mm) | 3 (76.25) | 2.48 (63) | -0.52 (-13.25) -17.4% |
| Revolutions per mile (km) | 806.6 (501.2) | 696.4 (432.72) | -110.2 (-68.47) -13.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.16 mph (37.28 km/h) |
| 25 mph (40.23 km/h) | 28.96 mph (46.6 km/h) |
| 30 mph (48.28 km/h) | 34.75 mph (55.92 km/h) |
| 35 mph (56.33 km/h) | 40.54 mph (65.24 km/h) |
| 40 mph (64.37 km/h) | 46.33 mph (74.56 km/h) |
| 45 mph (72.42 km/h) | 52.12 mph (83.88 km/h) |
| 50 mph (80.47 km/h) | 57.91 mph (93.2 km/h) |
| 55 mph (88.51 km/h) | 63.7 mph (102.52 km/h) |
| 60 mph (96.56 km/h) | 69.49 mph (111.84 km/h) |
| 65 mph (104.61 km/h) | 75.29 mph (121.16 km/h) |
| 70 mph (112.65 km/h) | 81.08 mph (130.48 km/h) |
| 75 mph (120.7 km/h) | 86.87 mph (139.8 km/h) |
| 80 mph (128.75 km/h) | 92.66 mph (149.12 km/h) |
| 85 mph (136.79 km/h) | 98.45 mph (158.44 km/h) |
| 90 mph (144.84 km/h) | 104.24 mph (167.76 km/h) |
| 95 mph (152.89 km/h) | 110.03 mph (177.08 km/h) |
| 100 mph (160.93 km/h) | 115.82 mph (186.4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1772 | 2059 | 2217 | 2315 | 2421 | 2496 | 2579 | 2677 | 2813 | 2949 | 3099 | 3220 | 3439 | 3680 | 3869 | 3989 | 4057 | 4306 | 4653 | 5407 |
Better Fuel Economy Factory Ratios Increased Power
