Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-14 | 186/65-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.34 (516.6) | 23.52 (597.4) | 3.18 (80.8) 15.6% |
| Width inches (mm) | 4.53 (115) | 7.32 (186) | 2.8 (71) 61.7% |
| Circum. inches (mm) | 63.9 (1622.95) | 73.89 (1876.79) | 9.99 (253.84) 15.6% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 4.76 (120.9) | 1.59 (40.4) 50.2% |
| Revolutions per mile (km) | 991.62 (616.16) | 857.5 (532.82) | -134.12 (-83.34) -13.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.13 mph (37.22 km/h) |
| 25 mph (40.23 km/h) | 28.91 mph (46.53 km/h) |
| 30 mph (48.28 km/h) | 34.69 mph (55.83 km/h) |
| 35 mph (56.33 km/h) | 40.47 mph (65.14 km/h) |
| 40 mph (64.37 km/h) | 46.26 mph (74.44 km/h) |
| 45 mph (72.42 km/h) | 52.04 mph (83.75 km/h) |
| 50 mph (80.47 km/h) | 57.82 mph (93.05 km/h) |
| 55 mph (88.51 km/h) | 63.6 mph (102.36 km/h) |
| 60 mph (96.56 km/h) | 69.38 mph (111.66 km/h) |
| 65 mph (104.61 km/h) | 75.17 mph (120.97 km/h) |
| 70 mph (112.65 km/h) | 80.95 mph (130.27 km/h) |
| 75 mph (120.7 km/h) | 86.73 mph (139.58 km/h) |
| 80 mph (128.75 km/h) | 92.51 mph (148.88 km/h) |
| 85 mph (136.79 km/h) | 98.29 mph (158.19 km/h) |
| 90 mph (144.84 km/h) | 104.08 mph (167.5 km/h) |
| 95 mph (152.89 km/h) | 109.86 mph (176.8 km/h) |
| 100 mph (160.93 km/h) | 115.64 mph (186.11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2182 | 2535 | 2730 | 2851 | 2981 | 3074 | 3176 | 3296 | 3464 | 3631 | 3816 | 3965 | 4234 | 4531 | 4764 | 4912 | 4996 | 5302 | 5729 | 6658 |
Better Fuel Economy Factory Ratios Increased Power
