Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/60-15 | 170/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.5 (597) | 23.03 (585) | -0.47 (-12) -2% |
| Width inches (mm) | 7.09 (180) | 6.69 (170) | -0.39 (-10) -5.6% |
| Circum. inches (mm) | 73.84 (1875.53) | 72.36 (1837.83) | -1.48 (-37.7) -2% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.02 (102) | -0.24 (-6) -5.6% |
| Revolutions per mile (km) | 858.07 (533.18) | 875.68 (544.12) | 17.6 (10.94) 2.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.6 mph (31.54 km/h) |
| 25 mph (40.23 km/h) | 24.5 mph (39.42 km/h) |
| 30 mph (48.28 km/h) | 29.4 mph (47.31 km/h) |
| 35 mph (56.33 km/h) | 34.3 mph (55.19 km/h) |
| 40 mph (64.37 km/h) | 39.2 mph (63.08 km/h) |
| 45 mph (72.42 km/h) | 44.1 mph (70.96 km/h) |
| 50 mph (80.47 km/h) | 48.99 mph (78.85 km/h) |
| 55 mph (88.51 km/h) | 53.89 mph (86.73 km/h) |
| 60 mph (96.56 km/h) | 58.79 mph (94.62 km/h) |
| 65 mph (104.61 km/h) | 63.69 mph (102.5 km/h) |
| 70 mph (112.65 km/h) | 68.59 mph (110.39 km/h) |
| 75 mph (120.7 km/h) | 73.49 mph (118.27 km/h) |
| 80 mph (128.75 km/h) | 78.39 mph (126.16 km/h) |
| 85 mph (136.79 km/h) | 83.29 mph (134.04 km/h) |
| 90 mph (144.84 km/h) | 88.19 mph (141.93 km/h) |
| 95 mph (152.89 km/h) | 93.09 mph (149.81 km/h) |
| 100 mph (160.93 km/h) | 97.99 mph (157.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2228 | 2589 | 2788 | 2911 | 3044 | 3139 | 3243 | 3366 | 3537 | 3708 | 3897 | 4049 | 4324 | 4628 | 4865 | 5016 | 5102 | 5415 | 5851 | 6799 |
Better Fuel Economy Factory Ratios Increased Power
