Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 160/70-15 | 170/90-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.82 (605) | 27.05 (687) | 3.23 (82) 13.6% |
| Width inches (mm) | 6.3 (160) | 6.69 (170) | 0.39 (10) 6.3% |
| Circum. inches (mm) | 74.83 (1900.66) | 84.97 (2158.27) | 10.14 (257.61) 13.6% |
| Sidewall Height inches (mm) | 4.41 (112) | 6.02 (153) | 1.61 (41) 36.6% |
| Revolutions per mile (km) | 846.73 (526.13) | 745.66 (463.33) | -101.06 (-62.8) -11.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.71 mph (36.55 km/h) |
| 25 mph (40.23 km/h) | 28.39 mph (45.69 km/h) |
| 30 mph (48.28 km/h) | 34.07 mph (54.82 km/h) |
| 35 mph (56.33 km/h) | 39.74 mph (63.96 km/h) |
| 40 mph (64.37 km/h) | 45.42 mph (73.1 km/h) |
| 45 mph (72.42 km/h) | 51.1 mph (82.24 km/h) |
| 50 mph (80.47 km/h) | 56.78 mph (91.37 km/h) |
| 55 mph (88.51 km/h) | 62.45 mph (100.51 km/h) |
| 60 mph (96.56 km/h) | 68.13 mph (109.65 km/h) |
| 65 mph (104.61 km/h) | 73.81 mph (118.79 km/h) |
| 70 mph (112.65 km/h) | 79.49 mph (127.92 km/h) |
| 75 mph (120.7 km/h) | 85.17 mph (137.06 km/h) |
| 80 mph (128.75 km/h) | 90.84 mph (146.2 km/h) |
| 85 mph (136.79 km/h) | 96.52 mph (155.34 km/h) |
| 90 mph (144.84 km/h) | 102.2 mph (164.47 km/h) |
| 95 mph (152.89 km/h) | 107.88 mph (173.61 km/h) |
| 100 mph (160.93 km/h) | 113.55 mph (182.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1898 | 2204 | 2374 | 2479 | 2592 | 2673 | 2762 | 2867 | 3012 | 3157 | 3319 | 3448 | 3682 | 3940 | 4142 | 4272 | 4344 | 4611 | 4982 | 5790 |
Better Fuel Economy Factory Ratios Increased Power
