Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/40-18 | 225/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.46 (621.2) | 24.2 (614.7) | -0.26 (-6.5) -1% |
| Width inches (mm) | 8.07 (205) | 8.86 (225) | 0.79 (20) 9.8% |
| Circum. inches (mm) | 76.83 (1951.56) | 76.03 (1931.14) | -0.8 (-20.42) -1% |
| Sidewall Height inches (mm) | 3.23 (82) | 3.1 (78.75) | -0.13 (-3.25) -4% |
| Revolutions per mile (km) | 824.65 (512.41) | 833.37 (517.83) | 8.72 (5.42) 1.1% |
225/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.79 mph (31.85 km/h) |
| 25 mph (40.23 km/h) | 24.74 mph (39.81 km/h) |
| 30 mph (48.28 km/h) | 29.69 mph (47.78 km/h) |
| 35 mph (56.33 km/h) | 34.63 mph (55.74 km/h) |
| 40 mph (64.37 km/h) | 39.58 mph (63.7 km/h) |
| 45 mph (72.42 km/h) | 44.53 mph (71.66 km/h) |
| 50 mph (80.47 km/h) | 49.48 mph (79.63 km/h) |
| 55 mph (88.51 km/h) | 54.42 mph (87.59 km/h) |
| 60 mph (96.56 km/h) | 59.37 mph (95.55 km/h) |
| 65 mph (104.61 km/h) | 64.32 mph (103.51 km/h) |
| 70 mph (112.65 km/h) | 69.27 mph (111.48 km/h) |
| 75 mph (120.7 km/h) | 74.22 mph (119.44 km/h) |
| 80 mph (128.75 km/h) | 79.16 mph (127.4 km/h) |
| 85 mph (136.79 km/h) | 84.11 mph (135.36 km/h) |
| 90 mph (144.84 km/h) | 89.06 mph (143.33 km/h) |
| 95 mph (152.89 km/h) | 94.01 mph (151.29 km/h) |
| 100 mph (160.93 km/h) | 98.95 mph (159.25 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
