Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 100/85-19 | 275/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.69 (652.6) | 32.07 (814.7) | 6.38 (162.1) 24.8% |
| Width inches (mm) | 3.94 (100) | 10.83 (275) | 6.89 (175) 175% |
| Circum. inches (mm) | 80.72 (2050.2) | 100.77 (2559.46) | 20.05 (509.25) 24.8% |
| Sidewall Height inches (mm) | 3.35 (85) | 7.04 (178.75) | 3.69 (93.75) 110.3% |
| Revolutions per mile (km) | 784.97 (487.76) | 628.78 (390.71) | -156.18 (-97.05) -19.9% |
275/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.97 mph (40.18 km/h) |
| 25 mph (40.23 km/h) | 31.21 mph (50.23 km/h) |
| 30 mph (48.28 km/h) | 37.45 mph (60.27 km/h) |
| 35 mph (56.33 km/h) | 43.69 mph (70.32 km/h) |
| 40 mph (64.37 km/h) | 49.94 mph (80.36 km/h) |
| 45 mph (72.42 km/h) | 56.18 mph (90.41 km/h) |
| 50 mph (80.47 km/h) | 62.42 mph (100.45 km/h) |
| 55 mph (88.51 km/h) | 68.66 mph (110.5 km/h) |
| 60 mph (96.56 km/h) | 74.9 mph (120.55 km/h) |
| 65 mph (104.61 km/h) | 81.15 mph (130.59 km/h) |
| 70 mph (112.65 km/h) | 87.39 mph (140.64 km/h) |
| 75 mph (120.7 km/h) | 93.63 mph (150.68 km/h) |
| 80 mph (128.75 km/h) | 99.87 mph (160.73 km/h) |
| 85 mph (136.79 km/h) | 106.11 mph (170.77 km/h) |
| 90 mph (144.84 km/h) | 112.36 mph (180.82 km/h) |
| 95 mph (152.89 km/h) | 118.6 mph (190.86 km/h) |
| 100 mph (160.93 km/h) | 124.84 mph (200.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1600 | 1859 | 2002 | 2090 | 2186 | 2254 | 2329 | 2417 | 2540 | 2662 | 2799 | 2907 | 3105 | 3323 | 3493 | 3602 | 3663 | 3888 | 4201 | 4882 |
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