Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/65-15 | 185/65-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.47 (621.5) | 25.47 (646.9) | 1 (25.4) 4.1% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 76.87 (1952.5) | 80.01 (2032.3) | 3.14 (79.8) 4.1% |
| Sidewall Height inches (mm) | 4.73 (120.25) | 4.73 (120.25) | 0 (0) 0% |
| Revolutions per mile (km) | 824.25 (512.16) | 791.88 (492.05) | -32.36 (-20.11) -3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.82 mph (33.5 km/h) |
| 25 mph (40.23 km/h) | 26.02 mph (41.88 km/h) |
| 30 mph (48.28 km/h) | 31.23 mph (50.25 km/h) |
| 35 mph (56.33 km/h) | 36.43 mph (58.63 km/h) |
| 40 mph (64.37 km/h) | 41.63 mph (67 km/h) |
| 45 mph (72.42 km/h) | 46.84 mph (75.38 km/h) |
| 50 mph (80.47 km/h) | 52.04 mph (83.76 km/h) |
| 55 mph (88.51 km/h) | 57.25 mph (92.13 km/h) |
| 60 mph (96.56 km/h) | 62.45 mph (100.51 km/h) |
| 65 mph (104.61 km/h) | 67.66 mph (108.88 km/h) |
| 70 mph (112.65 km/h) | 72.86 mph (117.26 km/h) |
| 75 mph (120.7 km/h) | 78.07 mph (125.63 km/h) |
| 80 mph (128.75 km/h) | 83.27 mph (134.01 km/h) |
| 85 mph (136.79 km/h) | 88.47 mph (142.39 km/h) |
| 90 mph (144.84 km/h) | 93.68 mph (150.76 km/h) |
| 95 mph (152.89 km/h) | 98.88 mph (159.14 km/h) |
| 100 mph (160.93 km/h) | 104.09 mph (167.51 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
