Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/50-14 | 185/30-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.28 (540.6) | 18.37 (466.6) | -2.91 (-74) -13.7% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 66.86 (1698.34) | 57.71 (1465.87) | -9.15 (-232.48) -13.7% |
| Sidewall Height inches (mm) | 3.64 (92.5) | 2.19 (55.5) | -1.46 (-37) -40% |
| Revolutions per mile (km) | 947.6 (588.81) | 1097.88 (682.19) | 150.28 (93.38) 15.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.26 mph (27.78 km/h) |
| 25 mph (40.23 km/h) | 21.58 mph (34.73 km/h) |
| 30 mph (48.28 km/h) | 25.89 mph (41.67 km/h) |
| 35 mph (56.33 km/h) | 30.21 mph (48.62 km/h) |
| 40 mph (64.37 km/h) | 34.52 mph (55.56 km/h) |
| 45 mph (72.42 km/h) | 38.84 mph (62.51 km/h) |
| 50 mph (80.47 km/h) | 43.16 mph (69.45 km/h) |
| 55 mph (88.51 km/h) | 47.47 mph (76.4 km/h) |
| 60 mph (96.56 km/h) | 51.79 mph (83.34 km/h) |
| 65 mph (104.61 km/h) | 56.1 mph (90.29 km/h) |
| 70 mph (112.65 km/h) | 60.42 mph (97.23 km/h) |
| 75 mph (120.7 km/h) | 64.73 mph (104.18 km/h) |
| 80 mph (128.75 km/h) | 69.05 mph (111.12 km/h) |
| 85 mph (136.79 km/h) | 73.36 mph (118.07 km/h) |
| 90 mph (144.84 km/h) | 77.68 mph (125.01 km/h) |
| 95 mph (152.89 km/h) | 82 mph (131.96 km/h) |
| 100 mph (160.93 km/h) | 86.31 mph (138.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
