Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/40-16 | 185/55-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.4) | 24.01 (609.9) | 2.81 (71.5) 13.3% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 66.59 (1691.43) | 75.44 (1916.06) | 8.84 (224.62) 13.3% |
| Sidewall Height inches (mm) | 2.6 (66) | 4.01 (101.75) | 1.41 (35.75) 54.2% |
| Revolutions per mile (km) | 951.47 (591.21) | 839.92 (521.9) | -111.54 (-69.31) -11.7% |
185/55-16 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.66 mph (36.46 km/h) |
| 25 mph (40.23 km/h) | 28.32 mph (45.58 km/h) |
| 30 mph (48.28 km/h) | 33.98 mph (54.69 km/h) |
| 35 mph (56.33 km/h) | 39.65 mph (63.81 km/h) |
| 40 mph (64.37 km/h) | 45.31 mph (72.92 km/h) |
| 45 mph (72.42 km/h) | 50.98 mph (82.04 km/h) |
| 50 mph (80.47 km/h) | 56.64 mph (91.15 km/h) |
| 55 mph (88.51 km/h) | 62.3 mph (100.27 km/h) |
| 60 mph (96.56 km/h) | 67.97 mph (109.38 km/h) |
| 65 mph (104.61 km/h) | 73.63 mph (118.5 km/h) |
| 70 mph (112.65 km/h) | 79.3 mph (127.61 km/h) |
| 75 mph (120.7 km/h) | 84.96 mph (136.73 km/h) |
| 80 mph (128.75 km/h) | 90.62 mph (145.85 km/h) |
| 85 mph (136.79 km/h) | 96.29 mph (154.96 km/h) |
| 90 mph (144.84 km/h) | 101.95 mph (164.08 km/h) |
| 95 mph (152.89 km/h) | 107.62 mph (173.19 km/h) |
| 100 mph (160.93 km/h) | 113.28 mph (182.31 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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