Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/45-18 | 225/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.33 (668.7) | 24.2 (614.7) | -2.13 (-54) -8.1% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 82.71 (2100.78) | 76.03 (1931.14) | -6.68 (-169.65) -8.1% |
| Sidewall Height inches (mm) | 4.16 (105.75) | 3.1 (78.75) | -1.06 (-27) -25.5% |
| Revolutions per mile (km) | 766.07 (476.01) | 833.37 (517.83) | 67.3 (41.82) 8.8% |
225/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.38 mph (29.59 km/h) |
| 25 mph (40.23 km/h) | 22.98 mph (36.98 km/h) |
| 30 mph (48.28 km/h) | 27.58 mph (44.38 km/h) |
| 35 mph (56.33 km/h) | 32.17 mph (51.78 km/h) |
| 40 mph (64.37 km/h) | 36.77 mph (59.18 km/h) |
| 45 mph (72.42 km/h) | 41.37 mph (66.57 km/h) |
| 50 mph (80.47 km/h) | 45.96 mph (73.97 km/h) |
| 55 mph (88.51 km/h) | 50.56 mph (81.37 km/h) |
| 60 mph (96.56 km/h) | 55.15 mph (88.76 km/h) |
| 65 mph (104.61 km/h) | 59.75 mph (96.16 km/h) |
| 70 mph (112.65 km/h) | 64.35 mph (103.56 km/h) |
| 75 mph (120.7 km/h) | 68.94 mph (110.95 km/h) |
| 80 mph (128.75 km/h) | 73.54 mph (118.35 km/h) |
| 85 mph (136.79 km/h) | 78.14 mph (125.75 km/h) |
| 90 mph (144.84 km/h) | 82.73 mph (133.14 km/h) |
| 95 mph (152.89 km/h) | 87.33 mph (140.54 km/h) |
| 100 mph (160.93 km/h) | 91.92 mph (147.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2121 | 2464 | 2653 | 2771 | 2897 | 2987 | 3086 | 3204 | 3366 | 3529 | 3709 | 3853 | 4115 | 4404 | 4630 | 4774 | 4855 | 5153 | 5568 | 6471 |
Better Fuel Economy Factory Ratios Increased Power
