Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/50-18 | 235/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.65 (702.2) | 27.25 (692.2) | -0.39 (-10) -1.4% |
| Width inches (mm) | 9.65 (245) | 9.25 (235) | -0.39 (-10) -4.1% |
| Circum. inches (mm) | 86.85 (2206.03) | 85.61 (2174.61) | -1.24 (-31.42) -1.4% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 4.63 (117.5) | -0.2 (-5) -4.1% |
| Revolutions per mile (km) | 729.52 (453.3) | 740.06 (459.85) | 10.54 (6.55) 1.4% |
235/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.72 mph (31.73 km/h) |
| 25 mph (40.23 km/h) | 24.64 mph (39.66 km/h) |
| 30 mph (48.28 km/h) | 29.57 mph (47.59 km/h) |
| 35 mph (56.33 km/h) | 34.5 mph (55.52 km/h) |
| 40 mph (64.37 km/h) | 39.43 mph (63.46 km/h) |
| 45 mph (72.42 km/h) | 44.36 mph (71.39 km/h) |
| 50 mph (80.47 km/h) | 49.29 mph (79.32 km/h) |
| 55 mph (88.51 km/h) | 54.22 mph (87.25 km/h) |
| 60 mph (96.56 km/h) | 59.15 mph (95.19 km/h) |
| 65 mph (104.61 km/h) | 64.07 mph (103.12 km/h) |
| 70 mph (112.65 km/h) | 69 mph (111.05 km/h) |
| 75 mph (120.7 km/h) | 73.93 mph (118.98 km/h) |
| 80 mph (128.75 km/h) | 78.86 mph (126.91 km/h) |
| 85 mph (136.79 km/h) | 83.79 mph (134.85 km/h) |
| 90 mph (144.84 km/h) | 88.72 mph (142.78 km/h) |
| 95 mph (152.89 km/h) | 93.65 mph (150.71 km/h) |
| 100 mph (160.93 km/h) | 98.58 mph (158.64 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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