Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/80-13 | 185/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.39 (594.2) | 24.65 (626.2) | 1.26 (32) 5.4% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 73.49 (1866.73) | 77.45 (1967.27) | 3.96 (100.53) 5.4% |
| Sidewall Height inches (mm) | 5.2 (132) | 5.83 (148) | 0.63 (16) 12.1% |
| Revolutions per mile (km) | 862.12 (535.69) | 818.06 (508.32) | -44.06 (-27.37) -5.1% |
185/80-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.08 mph (33.92 km/h) |
| 25 mph (40.23 km/h) | 26.35 mph (42.4 km/h) |
| 30 mph (48.28 km/h) | 31.62 mph (50.88 km/h) |
| 35 mph (56.33 km/h) | 36.88 mph (59.36 km/h) |
| 40 mph (64.37 km/h) | 42.15 mph (67.84 km/h) |
| 45 mph (72.42 km/h) | 47.42 mph (76.32 km/h) |
| 50 mph (80.47 km/h) | 52.69 mph (84.8 km/h) |
| 55 mph (88.51 km/h) | 57.96 mph (93.28 km/h) |
| 60 mph (96.56 km/h) | 63.23 mph (101.76 km/h) |
| 65 mph (104.61 km/h) | 68.5 mph (110.24 km/h) |
| 70 mph (112.65 km/h) | 73.77 mph (118.72 km/h) |
| 75 mph (120.7 km/h) | 79.04 mph (127.2 km/h) |
| 80 mph (128.75 km/h) | 84.31 mph (135.68 km/h) |
| 85 mph (136.79 km/h) | 89.58 mph (144.16 km/h) |
| 90 mph (144.84 km/h) | 94.85 mph (152.64 km/h) |
| 95 mph (152.89 km/h) | 100.12 mph (161.12 km/h) |
| 100 mph (160.93 km/h) | 105.39 mph (169.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2082 | 2418 | 2604 | 2720 | 2844 | 2932 | 3030 | 3145 | 3304 | 3464 | 3641 | 3783 | 4040 | 4323 | 4545 | 4686 | 4766 | 5058 | 5466 | 6352 |
Better Fuel Economy Factory Ratios Increased Power
