Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/55-18 | 225/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.18 (715.7) | 28.63 (727.2) | 0.45 (11.5) 1.6% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 88.52 (2248.44) | 89.94 (2284.57) | 1.42 (36.13) 1.6% |
| Sidewall Height inches (mm) | 5.09 (129.25) | 5.31 (135) | 0.23 (5.75) 4.4% |
| Revolutions per mile (km) | 715.76 (444.75) | 704.44 (437.72) | -11.32 (-7.03) -1.6% |
225/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.32 mph (32.7 km/h) |
| 25 mph (40.23 km/h) | 25.4 mph (40.88 km/h) |
| 30 mph (48.28 km/h) | 30.48 mph (49.06 km/h) |
| 35 mph (56.33 km/h) | 35.56 mph (57.23 km/h) |
| 40 mph (64.37 km/h) | 40.64 mph (65.41 km/h) |
| 45 mph (72.42 km/h) | 45.72 mph (73.58 km/h) |
| 50 mph (80.47 km/h) | 50.8 mph (81.76 km/h) |
| 55 mph (88.51 km/h) | 55.88 mph (89.94 km/h) |
| 60 mph (96.56 km/h) | 60.96 mph (98.11 km/h) |
| 65 mph (104.61 km/h) | 66.04 mph (106.29 km/h) |
| 70 mph (112.65 km/h) | 71.12 mph (114.46 km/h) |
| 75 mph (120.7 km/h) | 76.21 mph (122.64 km/h) |
| 80 mph (128.75 km/h) | 81.29 mph (130.82 km/h) |
| 85 mph (136.79 km/h) | 86.37 mph (138.99 km/h) |
| 90 mph (144.84 km/h) | 91.45 mph (147.17 km/h) |
| 95 mph (152.89 km/h) | 96.53 mph (155.34 km/h) |
| 100 mph (160.93 km/h) | 101.61 mph (163.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1793 | 2083 | 2243 | 2342 | 2449 | 2525 | 2609 | 2708 | 2845 | 2983 | 3135 | 3257 | 3479 | 3723 | 3913 | 4035 | 4104 | 4356 | 4707 | 5470 |
Better Fuel Economy Factory Ratios Increased Power
