Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/55-15 | 155/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.71 (551.5) | 20.49 (520.5) | -1.22 (-31) -5.6% |
| Width inches (mm) | 6.1 (155) | 6.1 (155) | 0 (0) 0% |
| Circum. inches (mm) | 68.21 (1732.59) | 64.38 (1635.2) | -3.83 (-97.39) -5.6% |
| Sidewall Height inches (mm) | 3.36 (85.25) | 2.75 (69.75) | -0.61 (-15.5) -18.2% |
| Revolutions per mile (km) | 928.87 (577.17) | 984.19 (611.55) | 55.32 (34.38) 6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.88 mph (30.38 km/h) |
| 25 mph (40.23 km/h) | 23.59 mph (37.97 km/h) |
| 30 mph (48.28 km/h) | 28.31 mph (45.57 km/h) |
| 35 mph (56.33 km/h) | 33.03 mph (53.16 km/h) |
| 40 mph (64.37 km/h) | 37.75 mph (60.76 km/h) |
| 45 mph (72.42 km/h) | 42.47 mph (68.35 km/h) |
| 50 mph (80.47 km/h) | 47.19 mph (75.94 km/h) |
| 55 mph (88.51 km/h) | 51.91 mph (83.54 km/h) |
| 60 mph (96.56 km/h) | 56.63 mph (91.13 km/h) |
| 65 mph (104.61 km/h) | 61.35 mph (98.73 km/h) |
| 70 mph (112.65 km/h) | 66.07 mph (106.32 km/h) |
| 75 mph (120.7 km/h) | 70.78 mph (113.92 km/h) |
| 80 mph (128.75 km/h) | 75.5 mph (121.51 km/h) |
| 85 mph (136.79 km/h) | 80.22 mph (129.11 km/h) |
| 90 mph (144.84 km/h) | 84.94 mph (136.7 km/h) |
| 95 mph (152.89 km/h) | 89.66 mph (144.29 km/h) |
| 100 mph (160.93 km/h) | 94.38 mph (151.89 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
