Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/55-15 | 165/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.71 (551.5) | 24.09 (612) | 2.38 (60.5) 11% |
| Width inches (mm) | 6.1 (155) | 6.5 (165) | 0.39 (10) 6.5% |
| Circum. inches (mm) | 68.21 (1732.59) | 75.7 (1922.65) | 7.48 (190.07) 11% |
| Sidewall Height inches (mm) | 3.36 (85.25) | 4.55 (115.5) | 1.19 (30.25) 35.5% |
| Revolutions per mile (km) | 928.87 (577.17) | 837.04 (520.11) | -91.82 (-57.06) -9.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.19 mph (35.72 km/h) |
| 25 mph (40.23 km/h) | 27.74 mph (44.65 km/h) |
| 30 mph (48.28 km/h) | 33.29 mph (53.58 km/h) |
| 35 mph (56.33 km/h) | 38.84 mph (62.51 km/h) |
| 40 mph (64.37 km/h) | 44.39 mph (71.44 km/h) |
| 45 mph (72.42 km/h) | 49.94 mph (80.37 km/h) |
| 50 mph (80.47 km/h) | 55.49 mph (89.29 km/h) |
| 55 mph (88.51 km/h) | 61.03 mph (98.22 km/h) |
| 60 mph (96.56 km/h) | 66.58 mph (107.15 km/h) |
| 65 mph (104.61 km/h) | 72.13 mph (116.08 km/h) |
| 70 mph (112.65 km/h) | 77.68 mph (125.01 km/h) |
| 75 mph (120.7 km/h) | 83.23 mph (133.94 km/h) |
| 80 mph (128.75 km/h) | 88.78 mph (142.87 km/h) |
| 85 mph (136.79 km/h) | 94.32 mph (151.8 km/h) |
| 90 mph (144.84 km/h) | 99.87 mph (160.73 km/h) |
| 95 mph (152.89 km/h) | 105.42 mph (169.66 km/h) |
| 100 mph (160.93 km/h) | 110.97 mph (178.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2130 | 2475 | 2665 | 2783 | 2910 | 3000 | 3100 | 3218 | 3381 | 3544 | 3725 | 3870 | 4133 | 4423 | 4650 | 4795 | 4877 | 5176 | 5593 | 6499 |
Better Fuel Economy Factory Ratios Increased Power
