Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-13 | 185/85-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.65 (600.8) | 25.38 (644.7) | 1.73 (43.9) 7.3% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 74.31 (1887.47) | 79.74 (2025.38) | 5.43 (137.92) 7.3% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 6.19 (157.25) | 0.86 (21.95) 16.2% |
| Revolutions per mile (km) | 852.65 (529.81) | 794.59 (493.73) | -58.06 (-36.08) -6.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.46 mph (34.54 km/h) |
| 25 mph (40.23 km/h) | 26.83 mph (43.17 km/h) |
| 30 mph (48.28 km/h) | 32.19 mph (51.81 km/h) |
| 35 mph (56.33 km/h) | 37.56 mph (60.44 km/h) |
| 40 mph (64.37 km/h) | 42.92 mph (69.08 km/h) |
| 45 mph (72.42 km/h) | 48.29 mph (77.71 km/h) |
| 50 mph (80.47 km/h) | 53.65 mph (86.35 km/h) |
| 55 mph (88.51 km/h) | 59.02 mph (94.98 km/h) |
| 60 mph (96.56 km/h) | 64.38 mph (103.62 km/h) |
| 65 mph (104.61 km/h) | 69.75 mph (112.25 km/h) |
| 70 mph (112.65 km/h) | 75.11 mph (120.89 km/h) |
| 75 mph (120.7 km/h) | 80.48 mph (129.52 km/h) |
| 80 mph (128.75 km/h) | 85.85 mph (138.16 km/h) |
| 85 mph (136.79 km/h) | 91.21 mph (146.79 km/h) |
| 90 mph (144.84 km/h) | 96.58 mph (155.42 km/h) |
| 95 mph (152.89 km/h) | 101.94 mph (164.06 km/h) |
| 100 mph (160.93 km/h) | 107.31 mph (172.69 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | 2349 | 2530 | 2642 | 2762 | 2848 | 2943 | 3055 | 3210 | 3364 | 3536 | 3674 | 3924 | 4199 | 4414 | 4552 | 4629 | 4913 | 5309 | 6169 |
Better Fuel Economy Factory Ratios Increased Power
