Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/50-14 | 185/75-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.28 (540.6) | 22.93 (582.3) | 1.64 (41.7) 7.7% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 66.86 (1698.34) | 72.02 (1829.35) | 5.16 (131) 7.7% |
| Sidewall Height inches (mm) | 3.64 (92.5) | 5.46 (138.75) | 1.82 (46.25) 50% |
| Revolutions per mile (km) | 947.6 (588.81) | 879.74 (546.64) | -67.86 (-42.17) -7.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.54 mph (34.67 km/h) |
| 25 mph (40.23 km/h) | 26.93 mph (43.34 km/h) |
| 30 mph (48.28 km/h) | 32.31 mph (52 km/h) |
| 35 mph (56.33 km/h) | 37.7 mph (60.67 km/h) |
| 40 mph (64.37 km/h) | 43.09 mph (69.34 km/h) |
| 45 mph (72.42 km/h) | 48.47 mph (78.01 km/h) |
| 50 mph (80.47 km/h) | 53.86 mph (86.67 km/h) |
| 55 mph (88.51 km/h) | 59.24 mph (95.34 km/h) |
| 60 mph (96.56 km/h) | 64.63 mph (104.01 km/h) |
| 65 mph (104.61 km/h) | 70.01 mph (112.68 km/h) |
| 70 mph (112.65 km/h) | 75.4 mph (121.34 km/h) |
| 75 mph (120.7 km/h) | 80.79 mph (130.01 km/h) |
| 80 mph (128.75 km/h) | 86.17 mph (138.68 km/h) |
| 85 mph (136.79 km/h) | 91.56 mph (147.35 km/h) |
| 90 mph (144.84 km/h) | 96.94 mph (156.01 km/h) |
| 95 mph (152.89 km/h) | 102.33 mph (164.68 km/h) |
| 100 mph (160.93 km/h) | 107.71 mph (173.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2239 | 2601 | 2801 | 2925 | 3058 | 3153 | 3258 | 3382 | 3553 | 3725 | 3915 | 4068 | 4344 | 4649 | 4887 | 5040 | 5125 | 5440 | 5878 | 6831 |
Better Fuel Economy Factory Ratios Increased Power
