Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-13 | 185/55-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.54 (547.2) | 22.01 (559.1) | 0.47 (11.9) 2.2% |
| Width inches (mm) | 6.1 (155) | 7.28 (185) | 1.18 (30) 19.4% |
| Circum. inches (mm) | 67.68 (1719.08) | 69.15 (1756.46) | 1.47 (37.38) 2.2% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 4.01 (101.75) | -0.27 (-6.75) -6.2% |
| Revolutions per mile (km) | 936.17 (581.71) | 916.24 (569.32) | -19.93 (-12.38) -2.1% |
185/55-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.43 mph (32.89 km/h) |
| 25 mph (40.23 km/h) | 25.54 mph (41.11 km/h) |
| 30 mph (48.28 km/h) | 30.65 mph (49.33 km/h) |
| 35 mph (56.33 km/h) | 35.76 mph (57.55 km/h) |
| 40 mph (64.37 km/h) | 40.87 mph (65.77 km/h) |
| 45 mph (72.42 km/h) | 45.98 mph (74 km/h) |
| 50 mph (80.47 km/h) | 51.09 mph (82.22 km/h) |
| 55 mph (88.51 km/h) | 56.2 mph (90.44 km/h) |
| 60 mph (96.56 km/h) | 61.3 mph (98.66 km/h) |
| 65 mph (104.61 km/h) | 66.41 mph (106.88 km/h) |
| 70 mph (112.65 km/h) | 71.52 mph (115.1 km/h) |
| 75 mph (120.7 km/h) | 76.63 mph (123.33 km/h) |
| 80 mph (128.75 km/h) | 81.74 mph (131.55 km/h) |
| 85 mph (136.79 km/h) | 86.85 mph (139.77 km/h) |
| 90 mph (144.84 km/h) | 91.96 mph (147.99 km/h) |
| 95 mph (152.89 km/h) | 97.07 mph (156.21 km/h) |
| 100 mph (160.93 km/h) | 102.17 mph (164.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2332 | 2709 | 2917 | 3046 | 3185 | 3284 | 3393 | 3522 | 3701 | 3879 | 4078 | 4237 | 4524 | 4842 | 5090 | 5249 | 5338 | 5665 | 6122 | 7114 |
Better Fuel Economy Factory Ratios Increased Power
