Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/50-18 | 255/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.25 (692.2) | 30.05 (763.2) | 2.8 (71) 10.3% |
| Width inches (mm) | 9.25 (235) | 10.04 (255) | 0.79 (20) 8.5% |
| Circum. inches (mm) | 85.61 (2174.61) | 94.4 (2397.66) | 8.78 (223.05) 10.3% |
| Sidewall Height inches (mm) | 4.63 (117.5) | 6.02 (153) | 1.4 (35.5) 30.2% |
| Revolutions per mile (km) | 740.06 (459.85) | 671.21 (417.07) | -68.85 (-42.78) -9.3% |
255/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.05 mph (35.49 km/h) |
| 25 mph (40.23 km/h) | 27.56 mph (44.36 km/h) |
| 30 mph (48.28 km/h) | 33.08 mph (53.23 km/h) |
| 35 mph (56.33 km/h) | 38.59 mph (62.1 km/h) |
| 40 mph (64.37 km/h) | 44.1 mph (70.98 km/h) |
| 45 mph (72.42 km/h) | 49.62 mph (79.85 km/h) |
| 50 mph (80.47 km/h) | 55.13 mph (88.72 km/h) |
| 55 mph (88.51 km/h) | 60.64 mph (97.59 km/h) |
| 60 mph (96.56 km/h) | 66.15 mph (106.47 km/h) |
| 65 mph (104.61 km/h) | 71.67 mph (115.34 km/h) |
| 70 mph (112.65 km/h) | 77.18 mph (124.21 km/h) |
| 75 mph (120.7 km/h) | 82.69 mph (133.08 km/h) |
| 80 mph (128.75 km/h) | 88.21 mph (141.95 km/h) |
| 85 mph (136.79 km/h) | 93.72 mph (150.83 km/h) |
| 90 mph (144.84 km/h) | 99.23 mph (159.7 km/h) |
| 95 mph (152.89 km/h) | 104.74 mph (168.57 km/h) |
| 100 mph (160.93 km/h) | 110.26 mph (177.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1708 | 1984 | 2137 | 2231 | 2333 | 2406 | 2486 | 2580 | 2711 | 2842 | 2987 | 3104 | 3314 | 3547 | 3729 | 3845 | 3910 | 4150 | 4485 | 5212 |
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