Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/40-14 | 185/30-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.14 (511.6) | 18.37 (466.6) | -1.77 (-45) -8.8% |
| Width inches (mm) | 7.68 (195) | 7.28 (185) | -0.39 (-10) -5.1% |
| Circum. inches (mm) | 63.28 (1607.24) | 57.71 (1465.87) | -5.57 (-141.37) -8.8% |
| Sidewall Height inches (mm) | 3.07 (78) | 2.19 (55.5) | -0.89 (-22.5) -28.8% |
| Revolutions per mile (km) | 1001.31 (622.18) | 1097.88 (682.19) | 96.57 (60) 9.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.24 mph (29.36 km/h) |
| 25 mph (40.23 km/h) | 22.8 mph (36.69 km/h) |
| 30 mph (48.28 km/h) | 27.36 mph (44.03 km/h) |
| 35 mph (56.33 km/h) | 31.92 mph (51.37 km/h) |
| 40 mph (64.37 km/h) | 36.48 mph (58.71 km/h) |
| 45 mph (72.42 km/h) | 41.04 mph (66.05 km/h) |
| 50 mph (80.47 km/h) | 45.6 mph (73.39 km/h) |
| 55 mph (88.51 km/h) | 50.16 mph (80.73 km/h) |
| 60 mph (96.56 km/h) | 54.72 mph (88.07 km/h) |
| 65 mph (104.61 km/h) | 59.28 mph (95.41 km/h) |
| 70 mph (112.65 km/h) | 63.84 mph (102.75 km/h) |
| 75 mph (120.7 km/h) | 68.4 mph (110.08 km/h) |
| 80 mph (128.75 km/h) | 72.96 mph (117.42 km/h) |
| 85 mph (136.79 km/h) | 77.52 mph (124.76 km/h) |
| 90 mph (144.84 km/h) | 82.08 mph (132.1 km/h) |
| 95 mph (152.89 km/h) | 86.64 mph (139.44 km/h) |
| 100 mph (160.93 km/h) | 91.2 mph (146.78 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
