Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/65-18 | 225/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.52 (749.7) | 30.4 (772.2) | 0.89 (22.5) 3% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 92.73 (2355.25) | 95.51 (2425.94) | 2.78 (70.69) 3% |
| Sidewall Height inches (mm) | 5.76 (146.25) | 6.2 (157.5) | 0.44 (11.25) 7.7% |
| Revolutions per mile (km) | 683.3 (424.58) | 663.39 (412.21) | -19.91 (-12.37) -2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.6 mph (33.15 km/h) |
| 25 mph (40.23 km/h) | 25.75 mph (41.44 km/h) |
| 30 mph (48.28 km/h) | 30.9 mph (49.73 km/h) |
| 35 mph (56.33 km/h) | 36.05 mph (58.02 km/h) |
| 40 mph (64.37 km/h) | 41.2 mph (66.31 km/h) |
| 45 mph (72.42 km/h) | 46.35 mph (74.59 km/h) |
| 50 mph (80.47 km/h) | 51.5 mph (82.88 km/h) |
| 55 mph (88.51 km/h) | 56.65 mph (91.17 km/h) |
| 60 mph (96.56 km/h) | 61.8 mph (99.46 km/h) |
| 65 mph (104.61 km/h) | 66.95 mph (107.75 km/h) |
| 70 mph (112.65 km/h) | 72.1 mph (116.04 km/h) |
| 75 mph (120.7 km/h) | 77.25 mph (124.32 km/h) |
| 80 mph (128.75 km/h) | 82.4 mph (132.61 km/h) |
| 85 mph (136.79 km/h) | 87.55 mph (140.9 km/h) |
| 90 mph (144.84 km/h) | 92.7 mph (149.19 km/h) |
| 95 mph (152.89 km/h) | 97.85 mph (157.48 km/h) |
| 100 mph (160.93 km/h) | 103 mph (165.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1688 | 1961 | 2112 | 2205 | 2306 | 2378 | 2457 | 2550 | 2680 | 2809 | 2953 | 3067 | 3276 | 3506 | 3685 | 3800 | 3865 | 4102 | 4432 | 5151 |
Better Fuel Economy Factory Ratios Increased Power
