Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-15 | 170/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.93 (658.5) | 25.04 (636) | -0.89 (-22.5) -3.4% |
| Width inches (mm) | 7.28 (185) | 6.69 (170) | -0.59 (-15) -8.1% |
| Circum. inches (mm) | 81.45 (2068.74) | 78.66 (1998.05) | -2.78 (-70.69) -3.4% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 5.02 (127.5) | -0.44 (-11.25) -8.1% |
| Revolutions per mile (km) | 777.93 (483.39) | 805.46 (500.49) | 27.52 (17.1) 3.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.32 mph (31.09 km/h) |
| 25 mph (40.23 km/h) | 24.15 mph (38.86 km/h) |
| 30 mph (48.28 km/h) | 28.97 mph (46.63 km/h) |
| 35 mph (56.33 km/h) | 33.8 mph (54.4 km/h) |
| 40 mph (64.37 km/h) | 38.63 mph (62.17 km/h) |
| 45 mph (72.42 km/h) | 43.46 mph (69.95 km/h) |
| 50 mph (80.47 km/h) | 48.29 mph (77.72 km/h) |
| 55 mph (88.51 km/h) | 53.12 mph (85.49 km/h) |
| 60 mph (96.56 km/h) | 57.95 mph (93.26 km/h) |
| 65 mph (104.61 km/h) | 62.78 mph (101.03 km/h) |
| 70 mph (112.65 km/h) | 67.61 mph (108.81 km/h) |
| 75 mph (120.7 km/h) | 72.44 mph (116.58 km/h) |
| 80 mph (128.75 km/h) | 77.27 mph (124.35 km/h) |
| 85 mph (136.79 km/h) | 82.1 mph (132.12 km/h) |
| 90 mph (144.84 km/h) | 86.92 mph (139.89 km/h) |
| 95 mph (152.89 km/h) | 91.75 mph (147.66 km/h) |
| 100 mph (160.93 km/h) | 96.58 mph (155.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2050 | 2381 | 2564 | 2678 | 2800 | 2887 | 2983 | 3096 | 3253 | 3410 | 3585 | 3724 | 3977 | 4256 | 4475 | 4614 | 4693 | 4980 | 5382 | 6254 |
Better Fuel Economy Factory Ratios Increased Power
