Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/60-18 | 260/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.32 (643.2) | 34.38 (873.2) | 9.06 (230) 35.8% |
| Width inches (mm) | 6.1 (155) | 10.24 (260) | 4.13 (105) 67.7% |
| Circum. inches (mm) | 79.55 (2020.67) | 108 (2743.24) | 28.45 (722.57) 35.8% |
| Sidewall Height inches (mm) | 3.66 (93) | 8.19 (208) | 4.53 (115) 123.7% |
| Revolutions per mile (km) | 796.44 (494.88) | 586.66 (364.53) | -209.78 (-130.35) -26.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.15 mph (43.7 km/h) |
| 25 mph (40.23 km/h) | 33.94 mph (54.62 km/h) |
| 30 mph (48.28 km/h) | 40.73 mph (65.54 km/h) |
| 35 mph (56.33 km/h) | 47.52 mph (76.47 km/h) |
| 40 mph (64.37 km/h) | 54.3 mph (87.39 km/h) |
| 45 mph (72.42 km/h) | 61.09 mph (98.32 km/h) |
| 50 mph (80.47 km/h) | 67.88 mph (109.24 km/h) |
| 55 mph (88.51 km/h) | 74.67 mph (120.17 km/h) |
| 60 mph (96.56 km/h) | 81.46 mph (131.09 km/h) |
| 65 mph (104.61 km/h) | 88.24 mph (142.01 km/h) |
| 70 mph (112.65 km/h) | 95.03 mph (152.94 km/h) |
| 75 mph (120.7 km/h) | 101.82 mph (163.86 km/h) |
| 80 mph (128.75 km/h) | 108.61 mph (174.79 km/h) |
| 85 mph (136.79 km/h) | 115.39 mph (185.71 km/h) |
| 90 mph (144.84 km/h) | 122.18 mph (196.63 km/h) |
| 95 mph (152.89 km/h) | 128.97 mph (207.56 km/h) |
| 100 mph (160.93 km/h) | 135.76 mph (218.48 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1493 | 1734 | 1868 | 1950 | 2039 | 2103 | 2173 | 2255 | 2370 | 2484 | 2611 | 2713 | 2897 | 3100 | 3259 | 3361 | 3418 | 3628 | 3920 | 4555 |
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