Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/65-16 | 185/60-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.21 (640.4) | 24.74 (628.4) | -0.47 (-12) -1.9% |
| Width inches (mm) | 7.09 (180) | 7.28 (185) | 0.2 (5) 2.8% |
| Circum. inches (mm) | 79.21 (2011.88) | 77.72 (1974.18) | -1.48 (-37.7) -1.9% |
| Sidewall Height inches (mm) | 4.61 (117) | 4.37 (111) | -0.24 (-6) -5.1% |
| Revolutions per mile (km) | 799.92 (497.05) | 815.2 (506.54) | 15.28 (9.49) 1.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.63 mph (31.58 km/h) |
| 25 mph (40.23 km/h) | 24.53 mph (39.48 km/h) |
| 30 mph (48.28 km/h) | 29.44 mph (47.38 km/h) |
| 35 mph (56.33 km/h) | 34.34 mph (55.27 km/h) |
| 40 mph (64.37 km/h) | 39.25 mph (63.17 km/h) |
| 45 mph (72.42 km/h) | 44.16 mph (71.06 km/h) |
| 50 mph (80.47 km/h) | 49.06 mph (78.96 km/h) |
| 55 mph (88.51 km/h) | 53.97 mph (86.86 km/h) |
| 60 mph (96.56 km/h) | 58.88 mph (94.75 km/h) |
| 65 mph (104.61 km/h) | 63.78 mph (102.65 km/h) |
| 70 mph (112.65 km/h) | 68.69 mph (110.54 km/h) |
| 75 mph (120.7 km/h) | 73.59 mph (118.44 km/h) |
| 80 mph (128.75 km/h) | 78.5 mph (126.34 km/h) |
| 85 mph (136.79 km/h) | 83.41 mph (134.23 km/h) |
| 90 mph (144.84 km/h) | 88.31 mph (142.13 km/h) |
| 95 mph (152.89 km/h) | 93.22 mph (150.02 km/h) |
| 100 mph (160.93 km/h) | 98.13 mph (157.92 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2075 | 2410 | 2595 | 2710 | 2834 | 2922 | 3019 | 3134 | 3293 | 3452 | 3628 | 3769 | 4025 | 4308 | 4529 | 4670 | 4749 | 5041 | 5447 | 6329 |
Better Fuel Economy Factory Ratios Increased Power
