Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/55-15 | 105/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.71 (551.5) | 19.55 (496.5) | -2.17 (-55) -10% |
| Width inches (mm) | 6.1 (155) | 4.13 (105) | -1.97 (-50) -32.3% |
| Circum. inches (mm) | 68.21 (1732.59) | 61.41 (1559.8) | -6.8 (-172.79) -10% |
| Sidewall Height inches (mm) | 3.36 (85.25) | 2.27 (57.75) | -1.08 (-27.5) -32.3% |
| Revolutions per mile (km) | 928.87 (577.17) | 1031.76 (641.11) | 102.9 (63.94) 11.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.01 mph (28.98 km/h) |
| 25 mph (40.23 km/h) | 22.51 mph (36.22 km/h) |
| 30 mph (48.28 km/h) | 27.01 mph (43.47 km/h) |
| 35 mph (56.33 km/h) | 31.51 mph (50.71 km/h) |
| 40 mph (64.37 km/h) | 36.01 mph (57.95 km/h) |
| 45 mph (72.42 km/h) | 40.51 mph (65.2 km/h) |
| 50 mph (80.47 km/h) | 45.01 mph (72.44 km/h) |
| 55 mph (88.51 km/h) | 49.51 mph (79.69 km/h) |
| 60 mph (96.56 km/h) | 54.02 mph (86.93 km/h) |
| 65 mph (104.61 km/h) | 58.52 mph (94.18 km/h) |
| 70 mph (112.65 km/h) | 63.02 mph (101.42 km/h) |
| 75 mph (120.7 km/h) | 67.52 mph (108.66 km/h) |
| 80 mph (128.75 km/h) | 72.02 mph (115.91 km/h) |
| 85 mph (136.79 km/h) | 76.52 mph (123.15 km/h) |
| 90 mph (144.84 km/h) | 81.02 mph (130.4 km/h) |
| 95 mph (152.89 km/h) | 85.53 mph (137.64 km/h) |
| 100 mph (160.93 km/h) | 90.03 mph (144.89 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
