Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/65-15 | 170/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.93 (582.5) | 23.7 (602) | 0.77 (19.5) 3.3% |
| Width inches (mm) | 6.1 (155) | 6.69 (170) | 0.59 (15) 9.7% |
| Circum. inches (mm) | 72.05 (1829.98) | 74.46 (1891.24) | 2.41 (61.26) 3.3% |
| Sidewall Height inches (mm) | 3.97 (100.75) | 4.35 (110.5) | 0.38 (9.75) 9.7% |
| Revolutions per mile (km) | 879.43 (546.45) | 850.95 (528.75) | -28.49 (-17.7) -3.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.67 mph (33.26 km/h) |
| 25 mph (40.23 km/h) | 25.84 mph (41.58 km/h) |
| 30 mph (48.28 km/h) | 31 mph (49.9 km/h) |
| 35 mph (56.33 km/h) | 36.17 mph (58.21 km/h) |
| 40 mph (64.37 km/h) | 41.34 mph (66.53 km/h) |
| 45 mph (72.42 km/h) | 46.51 mph (74.85 km/h) |
| 50 mph (80.47 km/h) | 51.67 mph (83.16 km/h) |
| 55 mph (88.51 km/h) | 56.84 mph (91.48 km/h) |
| 60 mph (96.56 km/h) | 62.01 mph (99.79 km/h) |
| 65 mph (104.61 km/h) | 67.18 mph (108.11 km/h) |
| 70 mph (112.65 km/h) | 72.34 mph (116.43 km/h) |
| 75 mph (120.7 km/h) | 77.51 mph (124.74 km/h) |
| 80 mph (128.75 km/h) | 82.68 mph (133.06 km/h) |
| 85 mph (136.79 km/h) | 87.85 mph (141.37 km/h) |
| 90 mph (144.84 km/h) | 93.01 mph (149.69 km/h) |
| 95 mph (152.89 km/h) | 98.18 mph (158.01 km/h) |
| 100 mph (160.93 km/h) | 103.35 mph (166.32 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2165 | 2516 | 2709 | 2829 | 2958 | 3050 | 3151 | 3271 | 3437 | 3603 | 3787 | 3935 | 4202 | 4497 | 4727 | 4875 | 4958 | 5262 | 5686 | 6607 |
Better Fuel Economy Factory Ratios Increased Power
