Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/40-14 | 195/30-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.14 (511.6) | 18.61 (472.6) | -1.54 (-39) -7.6% |
| Width inches (mm) | 7.68 (195) | 7.68 (195) | 0 (0) 0% |
| Circum. inches (mm) | 63.28 (1607.24) | 58.45 (1484.72) | -4.82 (-122.52) -7.6% |
| Sidewall Height inches (mm) | 3.07 (78) | 2.3 (58.5) | -0.77 (-19.5) -25% |
| Revolutions per mile (km) | 1001.31 (622.18) | 1083.94 (673.53) | 82.63 (51.34) 8.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.48 mph (29.73 km/h) |
| 25 mph (40.23 km/h) | 23.09 mph (37.17 km/h) |
| 30 mph (48.28 km/h) | 27.71 mph (44.6 km/h) |
| 35 mph (56.33 km/h) | 32.33 mph (52.03 km/h) |
| 40 mph (64.37 km/h) | 36.95 mph (59.47 km/h) |
| 45 mph (72.42 km/h) | 41.57 mph (66.9 km/h) |
| 50 mph (80.47 km/h) | 46.19 mph (74.33 km/h) |
| 55 mph (88.51 km/h) | 50.81 mph (81.77 km/h) |
| 60 mph (96.56 km/h) | 55.43 mph (89.2 km/h) |
| 65 mph (104.61 km/h) | 60.04 mph (96.63 km/h) |
| 70 mph (112.65 km/h) | 64.66 mph (104.07 km/h) |
| 75 mph (120.7 km/h) | 69.28 mph (111.5 km/h) |
| 80 mph (128.75 km/h) | 73.9 mph (118.93 km/h) |
| 85 mph (136.79 km/h) | 78.52 mph (126.37 km/h) |
| 90 mph (144.84 km/h) | 83.14 mph (133.8 km/h) |
| 95 mph (152.89 km/h) | 87.76 mph (141.23 km/h) |
| 100 mph (160.93 km/h) | 92.38 mph (148.67 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
