Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/40-16 | 185/60-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.4) | 24.74 (628.4) | 3.54 (90) 16.7% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 66.59 (1691.43) | 77.72 (1974.18) | 11.13 (282.74) 16.7% |
| Sidewall Height inches (mm) | 2.6 (66) | 4.37 (111) | 1.77 (45) 68.2% |
| Revolutions per mile (km) | 951.47 (591.21) | 815.2 (506.54) | -136.27 (-84.67) -14.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.34 mph (37.57 km/h) |
| 25 mph (40.23 km/h) | 29.18 mph (46.96 km/h) |
| 30 mph (48.28 km/h) | 35.01 mph (56.35 km/h) |
| 35 mph (56.33 km/h) | 40.85 mph (65.74 km/h) |
| 40 mph (64.37 km/h) | 46.69 mph (75.13 km/h) |
| 45 mph (72.42 km/h) | 52.52 mph (84.53 km/h) |
| 50 mph (80.47 km/h) | 58.36 mph (93.92 km/h) |
| 55 mph (88.51 km/h) | 64.19 mph (103.31 km/h) |
| 60 mph (96.56 km/h) | 70.03 mph (112.7 km/h) |
| 65 mph (104.61 km/h) | 75.87 mph (122.09 km/h) |
| 70 mph (112.65 km/h) | 81.7 mph (131.49 km/h) |
| 75 mph (120.7 km/h) | 87.54 mph (140.88 km/h) |
| 80 mph (128.75 km/h) | 93.37 mph (150.27 km/h) |
| 85 mph (136.79 km/h) | 99.21 mph (159.66 km/h) |
| 90 mph (144.84 km/h) | 105.04 mph (169.05 km/h) |
| 95 mph (152.89 km/h) | 110.88 mph (178.45 km/h) |
| 100 mph (160.93 km/h) | 116.72 mph (187.84 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
