Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/30-18 | 225/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.55 (598.2) | 28.52 (724.3) | 4.96 (126.1) 21.1% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 73.99 (1879.3) | 89.58 (2275.46) | 15.6 (396.15) 21.1% |
| Sidewall Height inches (mm) | 2.78 (70.5) | 5.76 (146.25) | 2.98 (75.75) 107.4% |
| Revolutions per mile (km) | 856.35 (532.11) | 707.26 (439.47) | -149.09 (-92.64) -17.4% |
225/65-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.22 mph (38.97 km/h) |
| 25 mph (40.23 km/h) | 30.27 mph (48.71 km/h) |
| 30 mph (48.28 km/h) | 36.32 mph (58.46 km/h) |
| 35 mph (56.33 km/h) | 42.38 mph (68.2 km/h) |
| 40 mph (64.37 km/h) | 48.43 mph (77.94 km/h) |
| 45 mph (72.42 km/h) | 54.49 mph (87.69 km/h) |
| 50 mph (80.47 km/h) | 60.54 mph (97.43 km/h) |
| 55 mph (88.51 km/h) | 66.59 mph (107.17 km/h) |
| 60 mph (96.56 km/h) | 72.65 mph (116.92 km/h) |
| 65 mph (104.61 km/h) | 78.7 mph (126.66 km/h) |
| 70 mph (112.65 km/h) | 84.76 mph (136.4 km/h) |
| 75 mph (120.7 km/h) | 90.81 mph (146.14 km/h) |
| 80 mph (128.75 km/h) | 96.86 mph (155.89 km/h) |
| 85 mph (136.79 km/h) | 102.92 mph (165.63 km/h) |
| 90 mph (144.84 km/h) | 108.97 mph (175.37 km/h) |
| 95 mph (152.89 km/h) | 115.03 mph (185.12 km/h) |
| 100 mph (160.93 km/h) | 121.08 mph (194.86 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1800 | 2091 | 2252 | 2351 | 2459 | 2535 | 2619 | 2719 | 2857 | 2995 | 3148 | 3270 | 3492 | 3738 | 3929 | 4052 | 4121 | 4373 | 4726 | 5491 |
Better Fuel Economy Factory Ratios Increased Power
