Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/55-15 | 155/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.71 (551.5) | 22.93 (582.5) | 1.22 (31) 5.6% |
| Width inches (mm) | 6.1 (155) | 6.1 (155) | 0 (0) 0% |
| Circum. inches (mm) | 68.21 (1732.59) | 72.05 (1829.98) | 3.83 (97.39) 5.6% |
| Sidewall Height inches (mm) | 3.36 (85.25) | 3.97 (100.75) | 0.61 (15.5) 18.2% |
| Revolutions per mile (km) | 928.87 (577.17) | 879.43 (546.45) | -49.43 (-30.72) -5.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.12 mph (34 km/h) |
| 25 mph (40.23 km/h) | 26.41 mph (42.5 km/h) |
| 30 mph (48.28 km/h) | 31.69 mph (50.99 km/h) |
| 35 mph (56.33 km/h) | 36.97 mph (59.49 km/h) |
| 40 mph (64.37 km/h) | 42.25 mph (67.99 km/h) |
| 45 mph (72.42 km/h) | 47.53 mph (76.49 km/h) |
| 50 mph (80.47 km/h) | 52.81 mph (84.99 km/h) |
| 55 mph (88.51 km/h) | 58.09 mph (93.49 km/h) |
| 60 mph (96.56 km/h) | 63.37 mph (101.99 km/h) |
| 65 mph (104.61 km/h) | 68.65 mph (110.49 km/h) |
| 70 mph (112.65 km/h) | 73.93 mph (118.99 km/h) |
| 75 mph (120.7 km/h) | 79.22 mph (127.49 km/h) |
| 80 mph (128.75 km/h) | 84.5 mph (135.98 km/h) |
| 85 mph (136.79 km/h) | 89.78 mph (144.48 km/h) |
| 90 mph (144.84 km/h) | 95.06 mph (152.98 km/h) |
| 95 mph (152.89 km/h) | 100.34 mph (161.48 km/h) |
| 100 mph (160.93 km/h) | 105.62 mph (169.98 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2238 | 2600 | 2800 | 2924 | 3057 | 3152 | 3257 | 3381 | 3552 | 3724 | 3914 | 4066 | 4343 | 4647 | 4885 | 5038 | 5124 | 5438 | 5876 | 6828 |
Better Fuel Economy Factory Ratios Increased Power
