Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/50-17 | 235/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.25 (666.8) | 27.25 (692.2) | 1 (25.4) 3.8% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 82.47 (2094.81) | 85.61 (2174.61) | 3.14 (79.8) 3.8% |
| Sidewall Height inches (mm) | 4.63 (117.5) | 4.63 (117.5) | 0 (0) 0% |
| Revolutions per mile (km) | 768.25 (477.37) | 740.06 (459.85) | -28.19 (-17.52) -3.7% |
235/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.76 mph (33.41 km/h) |
| 25 mph (40.23 km/h) | 25.95 mph (41.77 km/h) |
| 30 mph (48.28 km/h) | 31.14 mph (50.12 km/h) |
| 35 mph (56.33 km/h) | 36.33 mph (58.47 km/h) |
| 40 mph (64.37 km/h) | 41.52 mph (66.83 km/h) |
| 45 mph (72.42 km/h) | 46.71 mph (75.18 km/h) |
| 50 mph (80.47 km/h) | 51.9 mph (83.53 km/h) |
| 55 mph (88.51 km/h) | 57.1 mph (91.89 km/h) |
| 60 mph (96.56 km/h) | 62.29 mph (100.24 km/h) |
| 65 mph (104.61 km/h) | 67.48 mph (108.59 km/h) |
| 70 mph (112.65 km/h) | 72.67 mph (116.95 km/h) |
| 75 mph (120.7 km/h) | 77.86 mph (125.3 km/h) |
| 80 mph (128.75 km/h) | 83.05 mph (133.65 km/h) |
| 85 mph (136.79 km/h) | 88.24 mph (142.01 km/h) |
| 90 mph (144.84 km/h) | 93.43 mph (150.36 km/h) |
| 95 mph (152.89 km/h) | 98.62 mph (158.71 km/h) |
| 100 mph (160.93 km/h) | 103.81 mph (167.07 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 |
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