Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/40-18 | 235/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.29 (693.2) | 27.25 (692.2) | -0.04 (-1) -0.1% |
| Width inches (mm) | 11.61 (295) | 9.25 (235) | -2.36 (-60) -20.3% |
| Circum. inches (mm) | 85.74 (2177.75) | 85.61 (2174.61) | -0.12 (-3.14) -0.1% |
| Sidewall Height inches (mm) | 4.65 (118) | 4.63 (117.5) | -0.02 (-0.5) -0.4% |
| Revolutions per mile (km) | 738.99 (459.19) | 740.06 (459.85) | 1.07 (0.66) 0.1% |
235/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.97 mph (32.14 km/h) |
| 25 mph (40.23 km/h) | 24.96 mph (40.18 km/h) |
| 30 mph (48.28 km/h) | 29.96 mph (48.21 km/h) |
| 35 mph (56.33 km/h) | 34.95 mph (56.25 km/h) |
| 40 mph (64.37 km/h) | 39.94 mph (64.28 km/h) |
| 45 mph (72.42 km/h) | 44.94 mph (72.32 km/h) |
| 50 mph (80.47 km/h) | 49.93 mph (80.35 km/h) |
| 55 mph (88.51 km/h) | 54.92 mph (88.39 km/h) |
| 60 mph (96.56 km/h) | 59.91 mph (96.42 km/h) |
| 65 mph (104.61 km/h) | 64.91 mph (104.46 km/h) |
| 70 mph (112.65 km/h) | 69.9 mph (112.49 km/h) |
| 75 mph (120.7 km/h) | 74.89 mph (120.53 km/h) |
| 80 mph (128.75 km/h) | 79.88 mph (128.56 km/h) |
| 85 mph (136.79 km/h) | 84.88 mph (136.6 km/h) |
| 90 mph (144.84 km/h) | 89.87 mph (144.63 km/h) |
| 95 mph (152.89 km/h) | 94.86 mph (152.67 km/h) |
| 100 mph (160.93 km/h) | 99.86 mph (160.7 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
