Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/50-18 | 265/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.25 (692.2) | 27.39 (695.7) | 0.14 (3.5) 0.5% |
| Width inches (mm) | 9.25 (235) | 10.43 (265) | 1.18 (30) 12.8% |
| Circum. inches (mm) | 85.61 (2174.61) | 86.05 (2185.61) | 0.43 (11) 0.5% |
| Sidewall Height inches (mm) | 4.63 (117.5) | 4.69 (119.25) | 0.07 (1.75) 1.5% |
| Revolutions per mile (km) | 740.06 (459.85) | 736.34 (457.54) | -3.72 (-2.31) -0.5% |
265/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.1 mph (32.35 km/h) |
| 25 mph (40.23 km/h) | 25.13 mph (40.44 km/h) |
| 30 mph (48.28 km/h) | 30.15 mph (48.52 km/h) |
| 35 mph (56.33 km/h) | 35.18 mph (56.61 km/h) |
| 40 mph (64.37 km/h) | 40.2 mph (64.7 km/h) |
| 45 mph (72.42 km/h) | 45.23 mph (72.79 km/h) |
| 50 mph (80.47 km/h) | 50.25 mph (80.87 km/h) |
| 55 mph (88.51 km/h) | 55.28 mph (88.96 km/h) |
| 60 mph (96.56 km/h) | 60.3 mph (97.05 km/h) |
| 65 mph (104.61 km/h) | 65.33 mph (105.14 km/h) |
| 70 mph (112.65 km/h) | 70.35 mph (113.22 km/h) |
| 75 mph (120.7 km/h) | 75.38 mph (121.31 km/h) |
| 80 mph (128.75 km/h) | 80.4 mph (129.4 km/h) |
| 85 mph (136.79 km/h) | 85.43 mph (137.49 km/h) |
| 90 mph (144.84 km/h) | 90.46 mph (145.57 km/h) |
| 95 mph (152.89 km/h) | 95.48 mph (153.66 km/h) |
| 100 mph (160.93 km/h) | 100.51 mph (161.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1874 | 2177 | 2344 | 2448 | 2560 | 2639 | 2727 | 2831 | 2974 | 3118 | 3277 | 3405 | 3636 | 3891 | 4091 | 4218 | 4290 | 4553 | 4920 | 5717 |
Better Fuel Economy Factory Ratios Increased Power
