Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/85-14 | 189/60-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.38 (670.1) | 22.93 (582.4) | -3.45 (-87.7) -13.1% |
| Width inches (mm) | 7.28 (185) | 7.44 (189) | 0.16 (4) 2.2% |
| Circum. inches (mm) | 82.88 (2105.18) | 72.03 (1829.66) | -10.85 (-275.52) -13.1% |
| Sidewall Height inches (mm) | 6.19 (157.25) | 4.46 (113.4) | -1.73 (-43.85) -27.9% |
| Revolutions per mile (km) | 764.47 (475.02) | 879.58 (546.55) | 115.12 (71.53) 15.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.38 mph (27.97 km/h) |
| 25 mph (40.23 km/h) | 21.73 mph (34.97 km/h) |
| 30 mph (48.28 km/h) | 26.07 mph (41.96 km/h) |
| 35 mph (56.33 km/h) | 30.42 mph (48.96 km/h) |
| 40 mph (64.37 km/h) | 34.76 mph (55.95 km/h) |
| 45 mph (72.42 km/h) | 39.11 mph (62.94 km/h) |
| 50 mph (80.47 km/h) | 43.46 mph (69.94 km/h) |
| 55 mph (88.51 km/h) | 47.8 mph (76.93 km/h) |
| 60 mph (96.56 km/h) | 52.15 mph (83.92 km/h) |
| 65 mph (104.61 km/h) | 56.49 mph (90.92 km/h) |
| 70 mph (112.65 km/h) | 60.84 mph (97.91 km/h) |
| 75 mph (120.7 km/h) | 65.18 mph (104.9 km/h) |
| 80 mph (128.75 km/h) | 69.53 mph (111.9 km/h) |
| 85 mph (136.79 km/h) | 73.88 mph (118.89 km/h) |
| 90 mph (144.84 km/h) | 78.22 mph (125.88 km/h) |
| 95 mph (152.89 km/h) | 82.57 mph (132.88 km/h) |
| 100 mph (160.93 km/h) | 86.91 mph (139.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2238 | 2600 | 2800 | 2924 | 3058 | 3153 | 3258 | 3381 | 3553 | 3724 | 3915 | 4067 | 4343 | 4648 | 4886 | 5039 | 5124 | 5439 | 5877 | 6829 |
Better Fuel Economy Factory Ratios Increased Power
