Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/55-15 | 155/100-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.71 (551.5) | 27.2 (691) | 5.49 (139.5) 25.3% |
| Width inches (mm) | 6.1 (155) | 6.1 (155) | 0 (0) 0% |
| Circum. inches (mm) | 68.21 (1732.59) | 85.47 (2170.84) | 17.25 (438.25) 25.3% |
| Sidewall Height inches (mm) | 3.36 (85.25) | 6.1 (155) | 2.75 (69.75) 81.8% |
| Revolutions per mile (km) | 928.87 (577.17) | 741.35 (460.65) | -187.52 (-116.52) -20.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.06 mph (40.33 km/h) |
| 25 mph (40.23 km/h) | 31.32 mph (50.41 km/h) |
| 30 mph (48.28 km/h) | 37.59 mph (60.49 km/h) |
| 35 mph (56.33 km/h) | 43.85 mph (70.57 km/h) |
| 40 mph (64.37 km/h) | 50.12 mph (80.66 km/h) |
| 45 mph (72.42 km/h) | 56.38 mph (90.74 km/h) |
| 50 mph (80.47 km/h) | 62.65 mph (100.82 km/h) |
| 55 mph (88.51 km/h) | 68.91 mph (110.9 km/h) |
| 60 mph (96.56 km/h) | 75.18 mph (120.99 km/h) |
| 65 mph (104.61 km/h) | 81.44 mph (131.07 km/h) |
| 70 mph (112.65 km/h) | 87.71 mph (141.15 km/h) |
| 75 mph (120.7 km/h) | 93.97 mph (151.23 km/h) |
| 80 mph (128.75 km/h) | 100.24 mph (161.31 km/h) |
| 85 mph (136.79 km/h) | 106.5 mph (171.4 km/h) |
| 90 mph (144.84 km/h) | 112.77 mph (181.48 km/h) |
| 95 mph (152.89 km/h) | 119.03 mph (191.56 km/h) |
| 100 mph (160.93 km/h) | 125.29 mph (201.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1887 | 2192 | 2360 | 2465 | 2577 | 2657 | 2746 | 2850 | 2994 | 3139 | 3300 | 3428 | 3661 | 3918 | 4118 | 4247 | 4319 | 4584 | 4953 | 5756 |
Better Fuel Economy Factory Ratios Increased Power
