Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/65-13 | 185/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.47 (570.7) | 24.65 (626.2) | 2.19 (55.5) 9.7% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 70.59 (1792.91) | 77.45 (1967.27) | 6.86 (174.36) 9.7% |
| Sidewall Height inches (mm) | 4.73 (120.25) | 5.83 (148) | 1.09 (27.75) 23.1% |
| Revolutions per mile (km) | 897.62 (557.75) | 818.06 (508.32) | -79.56 (-49.43) -8.9% |
185/80-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.94 mph (35.32 km/h) |
| 25 mph (40.23 km/h) | 27.43 mph (44.15 km/h) |
| 30 mph (48.28 km/h) | 32.92 mph (52.98 km/h) |
| 35 mph (56.33 km/h) | 38.4 mph (61.8 km/h) |
| 40 mph (64.37 km/h) | 43.89 mph (70.63 km/h) |
| 45 mph (72.42 km/h) | 49.38 mph (79.46 km/h) |
| 50 mph (80.47 km/h) | 54.86 mph (88.29 km/h) |
| 55 mph (88.51 km/h) | 60.35 mph (97.12 km/h) |
| 60 mph (96.56 km/h) | 65.83 mph (105.95 km/h) |
| 65 mph (104.61 km/h) | 71.32 mph (114.78 km/h) |
| 70 mph (112.65 km/h) | 76.81 mph (123.61 km/h) |
| 75 mph (120.7 km/h) | 82.29 mph (132.44 km/h) |
| 80 mph (128.75 km/h) | 87.78 mph (141.27 km/h) |
| 85 mph (136.79 km/h) | 93.27 mph (150.1 km/h) |
| 90 mph (144.84 km/h) | 98.75 mph (158.93 km/h) |
| 95 mph (152.89 km/h) | 104.24 mph (167.76 km/h) |
| 100 mph (160.93 km/h) | 109.72 mph (176.59 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 |
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