Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/40-14 | 225/36-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.14 (511.6) | 24.38 (619.2) | 4.24 (107.6) 21% |
| Width inches (mm) | 7.68 (195) | 8.86 (225) | 1.18 (30) 15.4% |
| Circum. inches (mm) | 63.28 (1607.24) | 76.59 (1945.27) | 13.31 (338.04) 21% |
| Sidewall Height inches (mm) | 3.07 (78) | 3.19 (81) | 0.12 (3) 3.8% |
| Revolutions per mile (km) | 1001.31 (622.18) | 827.31 (514.07) | -174 (-108.12) -17.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.21 mph (38.96 km/h) |
| 25 mph (40.23 km/h) | 30.26 mph (48.7 km/h) |
| 30 mph (48.28 km/h) | 36.31 mph (58.43 km/h) |
| 35 mph (56.33 km/h) | 42.36 mph (68.17 km/h) |
| 40 mph (64.37 km/h) | 48.41 mph (77.91 km/h) |
| 45 mph (72.42 km/h) | 54.46 mph (87.65 km/h) |
| 50 mph (80.47 km/h) | 60.52 mph (97.39 km/h) |
| 55 mph (88.51 km/h) | 66.57 mph (107.13 km/h) |
| 60 mph (96.56 km/h) | 72.62 mph (116.87 km/h) |
| 65 mph (104.61 km/h) | 78.67 mph (126.61 km/h) |
| 70 mph (112.65 km/h) | 84.72 mph (136.35 km/h) |
| 75 mph (120.7 km/h) | 90.77 mph (146.09 km/h) |
| 80 mph (128.75 km/h) | 96.83 mph (155.83 km/h) |
| 85 mph (136.79 km/h) | 102.88 mph (165.57 km/h) |
| 90 mph (144.84 km/h) | 108.93 mph (175.3 km/h) |
| 95 mph (152.89 km/h) | 114.98 mph (185.04 km/h) |
| 100 mph (160.93 km/h) | 121.03 mph (194.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2105 | 2446 | 2634 | 2750 | 2876 | 2965 | 3064 | 3180 | 3342 | 3503 | 3682 | 3825 | 4085 | 4372 | 4596 | 4739 | 4820 | 5116 | 5528 | 6424 |
Better Fuel Economy Factory Ratios Increased Power
