Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/55-18 | 180/60-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.8 (655.2) | 24.5 (622.4) | -1.29 (-32.8) -5% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 81.04 (2058.37) | 76.98 (1955.33) | -4.06 (-103.04) -5% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.25 (108) | 0.35 (9) 9.1% |
| Revolutions per mile (km) | 781.85 (485.82) | 823.06 (511.42) | 41.2 (25.6) 5.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19 mph (30.58 km/h) |
| 25 mph (40.23 km/h) | 23.75 mph (38.22 km/h) |
| 30 mph (48.28 km/h) | 28.5 mph (45.86 km/h) |
| 35 mph (56.33 km/h) | 33.25 mph (53.51 km/h) |
| 40 mph (64.37 km/h) | 38 mph (61.15 km/h) |
| 45 mph (72.42 km/h) | 42.75 mph (68.8 km/h) |
| 50 mph (80.47 km/h) | 47.5 mph (76.44 km/h) |
| 55 mph (88.51 km/h) | 52.25 mph (84.08 km/h) |
| 60 mph (96.56 km/h) | 57 mph (91.73 km/h) |
| 65 mph (104.61 km/h) | 61.75 mph (99.37 km/h) |
| 70 mph (112.65 km/h) | 66.5 mph (107.01 km/h) |
| 75 mph (120.7 km/h) | 71.25 mph (114.66 km/h) |
| 80 mph (128.75 km/h) | 76 mph (122.3 km/h) |
| 85 mph (136.79 km/h) | 80.74 mph (129.95 km/h) |
| 90 mph (144.84 km/h) | 85.49 mph (137.59 km/h) |
| 95 mph (152.89 km/h) | 90.24 mph (145.23 km/h) |
| 100 mph (160.93 km/h) | 94.99 mph (152.88 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2095 | 2433 | 2620 | 2736 | 2861 | 2950 | 3048 | 3164 | 3324 | 3485 | 3663 | 3806 | 4064 | 4349 | 4572 | 4715 | 4795 | 5089 | 5499 | 6391 |
Better Fuel Economy Factory Ratios Increased Power
