Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/60-16 | 185/65-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.5 (622.4) | 25.47 (646.9) | 0.96 (24.5) 3.9% |
| Width inches (mm) | 7.09 (180) | 7.28 (185) | 0.2 (5) 2.8% |
| Circum. inches (mm) | 76.98 (1955.33) | 80.01 (2032.3) | 3.03 (76.97) 3.9% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.73 (120.25) | 0.48 (12.25) 11.3% |
| Revolutions per mile (km) | 823.06 (511.42) | 791.88 (492.05) | -31.17 (-19.37) -3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.79 mph (33.45 km/h) |
| 25 mph (40.23 km/h) | 25.98 mph (41.82 km/h) |
| 30 mph (48.28 km/h) | 31.18 mph (50.18 km/h) |
| 35 mph (56.33 km/h) | 36.38 mph (58.54 km/h) |
| 40 mph (64.37 km/h) | 41.57 mph (66.91 km/h) |
| 45 mph (72.42 km/h) | 46.77 mph (75.27 km/h) |
| 50 mph (80.47 km/h) | 51.97 mph (83.63 km/h) |
| 55 mph (88.51 km/h) | 57.17 mph (92 km/h) |
| 60 mph (96.56 km/h) | 62.36 mph (100.36 km/h) |
| 65 mph (104.61 km/h) | 67.56 mph (108.73 km/h) |
| 70 mph (112.65 km/h) | 72.76 mph (117.09 km/h) |
| 75 mph (120.7 km/h) | 77.95 mph (125.45 km/h) |
| 80 mph (128.75 km/h) | 83.15 mph (133.82 km/h) |
| 85 mph (136.79 km/h) | 88.35 mph (142.18 km/h) |
| 90 mph (144.84 km/h) | 93.54 mph (150.54 km/h) |
| 95 mph (152.89 km/h) | 98.74 mph (158.91 km/h) |
| 100 mph (160.93 km/h) | 103.94 mph (167.27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2015 | 2341 | 2521 | 2633 | 2753 | 2838 | 2933 | 3044 | 3199 | 3353 | 3524 | 3662 | 3910 | 4185 | 4399 | 4536 | 4614 | 4896 | 5291 | 6148 |
Better Fuel Economy Factory Ratios Increased Power
