Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/75-13 | 185/65-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.33 (592.7) | 22.47 (570.7) | -0.87 (-22) -3.7% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 73.31 (1862.02) | 70.59 (1792.91) | -2.72 (-69.12) -3.7% |
| Sidewall Height inches (mm) | 5.17 (131.25) | 4.73 (120.25) | -0.43 (-11) -8.4% |
| Revolutions per mile (km) | 864.3 (537.05) | 897.62 (557.75) | 33.32 (20.7) 3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.26 mph (30.99 km/h) |
| 25 mph (40.23 km/h) | 24.07 mph (38.74 km/h) |
| 30 mph (48.28 km/h) | 28.89 mph (46.49 km/h) |
| 35 mph (56.33 km/h) | 33.7 mph (54.24 km/h) |
| 40 mph (64.37 km/h) | 38.52 mph (61.98 km/h) |
| 45 mph (72.42 km/h) | 43.33 mph (69.73 km/h) |
| 50 mph (80.47 km/h) | 48.14 mph (77.48 km/h) |
| 55 mph (88.51 km/h) | 52.96 mph (85.23 km/h) |
| 60 mph (96.56 km/h) | 57.77 mph (92.98 km/h) |
| 65 mph (104.61 km/h) | 62.59 mph (100.72 km/h) |
| 70 mph (112.65 km/h) | 67.4 mph (108.47 km/h) |
| 75 mph (120.7 km/h) | 72.22 mph (116.22 km/h) |
| 80 mph (128.75 km/h) | 77.03 mph (123.97 km/h) |
| 85 mph (136.79 km/h) | 81.84 mph (131.72 km/h) |
| 90 mph (144.84 km/h) | 86.66 mph (139.46 km/h) |
| 95 mph (152.89 km/h) | 91.47 mph (147.21 km/h) |
| 100 mph (160.93 km/h) | 96.29 mph (154.96 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2284 | 2654 | 2858 | 2984 | 3120 | 3217 | 3324 | 3451 | 3626 | 3801 | 3995 | 4151 | 4432 | 4743 | 4987 | 5142 | 5230 | 5550 | 5997 | 6969 |
Better Fuel Economy Factory Ratios Increased Power
