Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-16 | 185/55-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.57 (649.4) | 24.01 (609.9) | -1.56 (-39.5) -6.1% |
| Width inches (mm) | 5.31 (135) | 7.28 (185) | 1.97 (50) 37% |
| Circum. inches (mm) | 80.32 (2040.15) | 75.44 (1916.06) | -4.89 (-124.09) -6.1% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 4.01 (101.75) | -0.78 (-19.75) -16.3% |
| Revolutions per mile (km) | 788.84 (490.16) | 839.92 (521.9) | 51.09 (31.75) 6.5% |
185/55-16 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.78 mph (30.23 km/h) |
| 25 mph (40.23 km/h) | 23.48 mph (37.79 km/h) |
| 30 mph (48.28 km/h) | 28.18 mph (45.34 km/h) |
| 35 mph (56.33 km/h) | 32.87 mph (52.9 km/h) |
| 40 mph (64.37 km/h) | 37.57 mph (60.46 km/h) |
| 45 mph (72.42 km/h) | 42.26 mph (68.02 km/h) |
| 50 mph (80.47 km/h) | 46.96 mph (75.57 km/h) |
| 55 mph (88.51 km/h) | 51.65 mph (83.13 km/h) |
| 60 mph (96.56 km/h) | 56.35 mph (90.69 km/h) |
| 65 mph (104.61 km/h) | 61.05 mph (98.24 km/h) |
| 70 mph (112.65 km/h) | 65.74 mph (105.8 km/h) |
| 75 mph (120.7 km/h) | 70.44 mph (113.36 km/h) |
| 80 mph (128.75 km/h) | 75.13 mph (120.92 km/h) |
| 85 mph (136.79 km/h) | 79.83 mph (128.47 km/h) |
| 90 mph (144.84 km/h) | 84.53 mph (136.03 km/h) |
| 95 mph (152.89 km/h) | 89.22 mph (143.59 km/h) |
| 100 mph (160.93 km/h) | 93.92 mph (151.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2137 | 2483 | 2674 | 2792 | 2920 | 3011 | 3111 | 3229 | 3393 | 3556 | 3738 | 3884 | 4148 | 4439 | 4666 | 4812 | 4893 | 5194 | 5612 | 6521 |
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