Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 210/40-18 | 235/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 27.25 (692.2) | 2.64 (67) 10.7% |
| Width inches (mm) | 8.27 (210) | 9.25 (235) | 0.98 (25) 11.9% |
| Circum. inches (mm) | 77.33 (1964.12) | 85.61 (2174.61) | 8.29 (210.49) 10.7% |
| Sidewall Height inches (mm) | 3.31 (84) | 4.63 (117.5) | 1.32 (33.5) 39.9% |
| Revolutions per mile (km) | 819.37 (509.13) | 740.06 (459.85) | -79.31 (-49.28) -9.7% |
235/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.14 mph (35.64 km/h) |
| 25 mph (40.23 km/h) | 27.68 mph (44.55 km/h) |
| 30 mph (48.28 km/h) | 33.21 mph (53.45 km/h) |
| 35 mph (56.33 km/h) | 38.75 mph (62.36 km/h) |
| 40 mph (64.37 km/h) | 44.29 mph (71.27 km/h) |
| 45 mph (72.42 km/h) | 49.82 mph (80.18 km/h) |
| 50 mph (80.47 km/h) | 55.36 mph (89.09 km/h) |
| 55 mph (88.51 km/h) | 60.89 mph (98 km/h) |
| 60 mph (96.56 km/h) | 66.43 mph (106.91 km/h) |
| 65 mph (104.61 km/h) | 71.97 mph (115.82 km/h) |
| 70 mph (112.65 km/h) | 77.5 mph (124.73 km/h) |
| 75 mph (120.7 km/h) | 83.04 mph (133.64 km/h) |
| 80 mph (128.75 km/h) | 88.57 mph (142.55 km/h) |
| 85 mph (136.79 km/h) | 94.11 mph (151.45 km/h) |
| 90 mph (144.84 km/h) | 99.64 mph (160.36 km/h) |
| 95 mph (152.89 km/h) | 105.18 mph (169.27 km/h) |
| 100 mph (160.93 km/h) | 110.72 mph (178.18 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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