Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/70-19 | 235/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.89 (657.6) | 27.25 (692.2) | 1.36 (34.6) 5.3% |
| Width inches (mm) | 4.92 (125) | 9.25 (235) | 4.33 (110) 88% |
| Circum. inches (mm) | 81.34 (2065.91) | 85.61 (2174.61) | 4.28 (108.7) 5.3% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 4.63 (117.5) | 1.18 (30) 34.3% |
| Revolutions per mile (km) | 779 (484.05) | 740.06 (459.85) | -38.94 (-24.2) -5% |
235/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.05 mph (33.88 km/h) |
| 25 mph (40.23 km/h) | 26.32 mph (42.35 km/h) |
| 30 mph (48.28 km/h) | 31.58 mph (50.82 km/h) |
| 35 mph (56.33 km/h) | 36.84 mph (59.29 km/h) |
| 40 mph (64.37 km/h) | 42.1 mph (67.76 km/h) |
| 45 mph (72.42 km/h) | 47.37 mph (76.23 km/h) |
| 50 mph (80.47 km/h) | 52.63 mph (84.7 km/h) |
| 55 mph (88.51 km/h) | 57.89 mph (93.17 km/h) |
| 60 mph (96.56 km/h) | 63.16 mph (101.64 km/h) |
| 65 mph (104.61 km/h) | 68.42 mph (110.11 km/h) |
| 70 mph (112.65 km/h) | 73.68 mph (118.58 km/h) |
| 75 mph (120.7 km/h) | 78.95 mph (127.05 km/h) |
| 80 mph (128.75 km/h) | 84.21 mph (135.52 km/h) |
| 85 mph (136.79 km/h) | 89.47 mph (143.99 km/h) |
| 90 mph (144.84 km/h) | 94.74 mph (152.46 km/h) |
| 95 mph (152.89 km/h) | 100 mph (160.93 km/h) |
| 100 mph (160.93 km/h) | 105.26 mph (169.4 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
