Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/75-13 | 185/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.33 (592.7) | 24.65 (626.2) | 1.32 (33.5) 5.7% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 73.31 (1862.02) | 77.45 (1967.27) | 4.14 (105.24) 5.7% |
| Sidewall Height inches (mm) | 5.17 (131.25) | 5.83 (148) | 0.66 (16.75) 12.8% |
| Revolutions per mile (km) | 864.3 (537.05) | 818.06 (508.32) | -46.24 (-28.73) -5.3% |
185/80-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.13 mph (34.01 km/h) |
| 25 mph (40.23 km/h) | 26.41 mph (42.51 km/h) |
| 30 mph (48.28 km/h) | 31.7 mph (51.01 km/h) |
| 35 mph (56.33 km/h) | 36.98 mph (59.51 km/h) |
| 40 mph (64.37 km/h) | 42.26 mph (68.01 km/h) |
| 45 mph (72.42 km/h) | 47.54 mph (76.51 km/h) |
| 50 mph (80.47 km/h) | 52.83 mph (85.02 km/h) |
| 55 mph (88.51 km/h) | 58.11 mph (93.52 km/h) |
| 60 mph (96.56 km/h) | 63.39 mph (102.02 km/h) |
| 65 mph (104.61 km/h) | 68.67 mph (110.52 km/h) |
| 70 mph (112.65 km/h) | 73.96 mph (119.02 km/h) |
| 75 mph (120.7 km/h) | 79.24 mph (127.52 km/h) |
| 80 mph (128.75 km/h) | 84.52 mph (136.02 km/h) |
| 85 mph (136.79 km/h) | 89.8 mph (144.53 km/h) |
| 90 mph (144.84 km/h) | 95.09 mph (153.03 km/h) |
| 95 mph (152.89 km/h) | 100.37 mph (161.53 km/h) |
| 100 mph (160.93 km/h) | 105.65 mph (170.03 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
