Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-15 | 175/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.93 (658.5) | 25.33 (643.5) | -0.59 (-15) -2.3% |
| Width inches (mm) | 7.28 (185) | 6.89 (175) | -0.39 (-10) -5.4% |
| Circum. inches (mm) | 81.45 (2068.74) | 79.59 (2021.61) | -1.86 (-47.12) -2.3% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 5.17 (131.25) | -0.3 (-7.5) -5.4% |
| Revolutions per mile (km) | 777.93 (483.39) | 796.07 (494.65) | 18.13 (11.27) 2.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.54 mph (31.45 km/h) |
| 25 mph (40.23 km/h) | 24.43 mph (39.32 km/h) |
| 30 mph (48.28 km/h) | 29.32 mph (47.18 km/h) |
| 35 mph (56.33 km/h) | 34.2 mph (55.04 km/h) |
| 40 mph (64.37 km/h) | 39.09 mph (62.91 km/h) |
| 45 mph (72.42 km/h) | 43.97 mph (70.77 km/h) |
| 50 mph (80.47 km/h) | 48.86 mph (78.63 km/h) |
| 55 mph (88.51 km/h) | 53.75 mph (86.5 km/h) |
| 60 mph (96.56 km/h) | 58.63 mph (94.36 km/h) |
| 65 mph (104.61 km/h) | 63.52 mph (102.22 km/h) |
| 70 mph (112.65 km/h) | 68.41 mph (110.09 km/h) |
| 75 mph (120.7 km/h) | 73.29 mph (117.95 km/h) |
| 80 mph (128.75 km/h) | 78.18 mph (125.82 km/h) |
| 85 mph (136.79 km/h) | 83.06 mph (133.68 km/h) |
| 90 mph (144.84 km/h) | 87.95 mph (141.54 km/h) |
| 95 mph (152.89 km/h) | 92.84 mph (149.41 km/h) |
| 100 mph (160.93 km/h) | 97.72 mph (157.27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2353 | 2534 | 2647 | 2767 | 2853 | 2948 | 3060 | 3215 | 3371 | 3543 | 3681 | 3931 | 4207 | 4422 | 4560 | 4638 | 4922 | 5319 | 6181 |
Better Fuel Economy Factory Ratios Increased Power
