Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-14 | 185/55-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.34 (516.6) | 24.01 (609.9) | 3.67 (93.3) 18.1% |
| Width inches (mm) | 4.53 (115) | 7.28 (185) | 2.76 (70) 60.9% |
| Circum. inches (mm) | 63.9 (1622.95) | 75.44 (1916.06) | 11.54 (293.11) 18.1% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 4.01 (101.75) | 0.84 (21.25) 26.4% |
| Revolutions per mile (km) | 991.62 (616.16) | 839.92 (521.9) | -151.69 (-94.26) -15.3% |
185/55-16 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.61 mph (38 km/h) |
| 25 mph (40.23 km/h) | 29.52 mph (47.5 km/h) |
| 30 mph (48.28 km/h) | 35.42 mph (57 km/h) |
| 35 mph (56.33 km/h) | 41.32 mph (66.5 km/h) |
| 40 mph (64.37 km/h) | 47.22 mph (76 km/h) |
| 45 mph (72.42 km/h) | 53.13 mph (85.5 km/h) |
| 50 mph (80.47 km/h) | 59.03 mph (95 km/h) |
| 55 mph (88.51 km/h) | 64.93 mph (104.5 km/h) |
| 60 mph (96.56 km/h) | 70.84 mph (114 km/h) |
| 65 mph (104.61 km/h) | 76.74 mph (123.5 km/h) |
| 70 mph (112.65 km/h) | 82.64 mph (133 km/h) |
| 75 mph (120.7 km/h) | 88.55 mph (142.5 km/h) |
| 80 mph (128.75 km/h) | 94.45 mph (152 km/h) |
| 85 mph (136.79 km/h) | 100.35 mph (161.5 km/h) |
| 90 mph (144.84 km/h) | 106.25 mph (171 km/h) |
| 95 mph (152.89 km/h) | 112.16 mph (180.5 km/h) |
| 100 mph (160.93 km/h) | 118.06 mph (190 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 |
Better Fuel Economy Factory Ratios Increased Power
