Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/45-19 | 235/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.33 (694.1) | 27.25 (692.2) | -0.07 (-1.9) -0.3% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 85.85 (2180.58) | 85.61 (2174.61) | -0.24 (-5.97) -0.3% |
| Sidewall Height inches (mm) | 4.16 (105.75) | 4.63 (117.5) | 0.46 (11.75) 11.1% |
| Revolutions per mile (km) | 738.04 (458.59) | 740.06 (459.85) | 2.03 (1.26) 0.3% |
235/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.95 mph (32.1 km/h) |
| 25 mph (40.23 km/h) | 24.93 mph (40.12 km/h) |
| 30 mph (48.28 km/h) | 29.92 mph (48.15 km/h) |
| 35 mph (56.33 km/h) | 34.9 mph (56.17 km/h) |
| 40 mph (64.37 km/h) | 39.89 mph (64.2 km/h) |
| 45 mph (72.42 km/h) | 44.88 mph (72.22 km/h) |
| 50 mph (80.47 km/h) | 49.86 mph (80.25 km/h) |
| 55 mph (88.51 km/h) | 54.85 mph (88.27 km/h) |
| 60 mph (96.56 km/h) | 59.84 mph (96.3 km/h) |
| 65 mph (104.61 km/h) | 64.82 mph (104.32 km/h) |
| 70 mph (112.65 km/h) | 69.81 mph (112.35 km/h) |
| 75 mph (120.7 km/h) | 74.79 mph (120.37 km/h) |
| 80 mph (128.75 km/h) | 79.78 mph (128.4 km/h) |
| 85 mph (136.79 km/h) | 84.77 mph (136.42 km/h) |
| 90 mph (144.84 km/h) | 89.75 mph (144.44 km/h) |
| 95 mph (152.89 km/h) | 94.74 mph (152.47 km/h) |
| 100 mph (160.93 km/h) | 99.73 mph (160.49 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1883 | 2188 | 2356 | 2460 | 2573 | 2653 | 2741 | 2845 | 2989 | 3134 | 3294 | 3422 | 3654 | 3911 | 4111 | 4239 | 4312 | 4576 | 4945 | 5746 |
Better Fuel Economy Factory Ratios Increased Power
